Enhance your programming skills from Scratch

The_Big_K

Sorry to interrupt: Is C/C++/PERL/PYTHON allowed? I can do the Program #1 😉

raj87verma88

I am not a master of computer languages but I know C and assembly. That is, if Shalini counts them in the category of languages 😛

shalini_goel14

Program # 1 : Write a simple program that accepts two numbers from user and print them on console.

#include<stdio.h>
main()
{
int a,b;                                                         /*Declare variables*/
char c;                
printf("Enter the first number\n");        
scanf("%d",&a);                                             /*input the first number*/
printf("Enter the second number\n");
scanf("%d",&b);                                             /*input second number*/
printf("Do you want to print the numbers?(y/n)");/*asks whether to print or not*/
scanf("%c",&c);
if(c=='y' || c=='Y')
printf("%d\n%d", a,b);                                    /*prints the numbers*/
}

//Program to accept two numbers and print the same 

#include<iostream.h>
#include<conio.h>
void main()
{
clrscr(); // clear screen
int a,b;  // declaration
cout<<"ENTER TWO NUMBERS: "; 
cin>>a>>b;
cout<<"\n"; // new line
cout<<a<<b;
getch();
}

[U]output[/U]

ENTER TWO NUMBERS: 3 2

3 2

//Program to accept two numbers and print the same

#include<stdio.h>
#include<cono.h>
void main()
{
int a,b;  // declaration
clrscr(); //clear screen
printf("ENTER TWO NUMBERS: ");
scanf("%d%d",&a,&b);
printf("\n%d %d",a,b);
getch();
}

[U]output[/U]

ENTER TWO NUMBERS: 3 2

3 2

import java.io.*;
class first
{
public static void main(String args[ ])
{
InputStreamReader isr=new Inputstreamreader(System.in);
BufferedReader br=new BufferedReader(isr);
System.out.println("enter two numbers");
int a=Integer.parseint(br.readLine( ));
int b=Integer.parseint(br.readLine( ));
System.out.println("if u want to print the numbers? (y/n)");
String option=br.readLine( );
if(option==y)
System.out.println("the numbers are     "+a+"   "+b); 
}
}


/*output is
enter two numbers
2
3
if u want to print the numbers? (y/n)
y
the numbers are     2   3
*/

print "Enter two numbers :"
a=input()
b=input()
print "You entered '" , a , "' and '" , b ,"'"

Enter two numbers :
1
2
You entered ' 1 ' and ' 2 '

shalini_goel14

Hi All CEans ,

So you guys don't get enough time to try your hands on programming? No tensions anymore, you will be given a chance here to do simple programming and in return get a surprise every month if your code will be liked.

Rules:
1. No sms language will be allowed
2. You can write your program in any language but expect answers of questions asked here in Java only.
3. Your program should be well compiled and executed.
4. Your program should be well-documented.
5. Your program should be enclosed within CODE tags.
6. Output should also be shown along with your program.
7. Don't make the thread dead.

You will get a surprise after every month.

In the starting programs will given here will be of Level1. Gradually its Level will be increased depending on the response of all CEans here.

Example
Program #1: Write a Program that prints "Hello World" in console.

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
package myjava;
 
/**
 *
 * @author shalinig
 */
public class HelloWorldProgram {
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        System.out.println("Hello World ");
    }
 
}

Ouput:
Hope you all will enjoy here. 😀

Joe1717

great idea!!

"""
Program : Write a simple program(in any computer language) that accepts a 
number from the user and prints "This is an even number" if the number is even 
and "This is not an even number" if the number is not even.
Language : Python
Author : komputergeek
"""
print "Enter number :"
num=input()
if num % 2 == 0 :
    print "Number is even"
else:
    print "Number is odd"

"""
Output 1:
Enter number :
43
Number is odd


Output 2:
Enter number :
46
Number is even

"""

/*
Program : Write a simple program(in any computer language) that accepts a 
number from the user and prints "This is an even number" if the number is even 
and "This is not an even number" if the number is not even.
Language : Java
Author : komputergeek
*/

import java.util.Scanner;

public class EvenNumber
{    
    public static void main(String args[])
    {
        int num;               //declaration
        Scanner sc=new Scanner(System.in); //create object of scanner class to read input from user
        System.out.print("Enter number : ");
        num=sc.nextInt();               //read int
        if((num % 2)==0)
            System.out.println("Number is even");
        else
            System.out.println("Number is odd");
    }
}

/*
Output 1 :

Enter number : 54
Number is even


Output 2 :

Enter number : 67
Number is odd
*/

/*Program to check whether the given number is even or not (C++)*/

#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int n;
cout<<"Enter the number:";
cin>>n;
if(n%2==0)
cout<<"This is an even number";
else
cout<<"This is not an even number";
getch();
}

[U]OUTPUT[/U]

Enter the number:2
This is an even number

Enter the number:3
This is not an even number

/*Program to check whether the given number is even or not (C)*/

#include<stdio.h>
#include<conio.h>
void main()
{
int n;
clrscr();
printf("Enter the number: ");
scanf("%d",&n);
if(n%2==0)
printf("This is an even number");
else
printf("This is not an even number");
getch();
}

[U]OUTPUT[/U]

Enter the number:2
This is an even number

Enter the number:3
This is not an even number

"""
Program : Write a program that check whether the given number is prime number or not. If the number is
 not a number, it should print desired output. Like if I input a charcater, it should print appropriate message 
at Console.Overall Your program should work for each and every kind of input appropriately.
Language : Python
Author : komputergeek
"""
print "Enter number :"
num=input()    #Take input from user 
flag=True
if num < 0 :
    num = num * -1 ;    # If number is negative,make it possitive so that 
                #program will produce correct output for -ve numbers
for i in range(2,num):
    if (num % i == 0):        #Check whether number is divisible by any other number
        flag=False        #if yes make flag false
        break
if num < 2 :
    flag=False
if flag == True :
    print "Number is prime"
else :
    print "Number is not prime"
"""
Output 1:
Enter number :
68
Number is not prime


Output 2:
Enter number :
67
Number is prime

"""

/*
Program : Write a program that check whether the given number is prime number or
not. If the number is not a number, it should print desired output. Like if I input a
charcater, it should print appropriate message at Console.Overall Your program should
work for each and every kind of input appropriately.
Language : Java
Author : komputergeek
*/

import java.util.Scanner;

public class PrimeNumber
{    
    public static void main(String args[])
    {
        int num;               //declaration
        boolean flag=true;
        Scanner sc=new Scanner(System.in); //create object of scanner class to read
                                               //input from user
        System.out.print("Enter number : ");
        num=sc.nextInt();               //read int
        if (num<0)
            num = num * -1;        //If number is negative,make it possitive so that 
                    //program will produce correct output for -ve numbers
        for(int i=2;i<num;i++)
        {    
                if((num % i) == 0)    //Check whether number is divisible by any other number
                {    
                   flag = false;        //if yes make flag false
                   break;    
                }
        }
        if (num < 2)
            flag=false;
        if (flag == true)
            System.out.println("Number is prime");
        else    
            System.out.println("Number is not prime");
    }
}

/*
Output 1 :

Enter number : 39
Number is not prime


Output 2 :

Enter number : 37
Number is prime

*/

shalini_goel14

So strating this thread from a very simple program.😀

Program # 1 : Write a simple program that accepts two numbers from user and print them on console.

All the best to all.

/*
 * Program1Class.java
 *
 * Created on February 27, 2009, 11:01 AM
 */
package myjava;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 *
 * @author cemember
 */
public class Program1Class {
    
   public static void main(String[] args){
       
      Integer num1, num2=null;
      BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
       try {
            System.out.println("Enter number 1:");
            num1=Integer.parseInt(br.readLine());
            System.out.println("Enter number 2:");
            num2=Integer.parseInt(br.readLine());
            
            System.out.println("Number1= "+num1+" and Number2= "+num2);
        } catch (IOException ex) {
            System.out.println("An IO Exception has occured");  
        }
   }
    
}

Enter number 1:
32
Enter number 2:
51
Number1= 32 and Number2= 51

/*
 * Program2Class.java
 *
 * Created on February 27, 2009, 11:20 AM
 */

package myjava;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 *
 * @author cemember
 */
public class Program2Class {
    
    public static void main(String arg[]){
        
        String enteredNum=null;
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter any value ");
        try {
            enteredNum= br.readLine();
            Integer enteredNumInInt=Integer.parseInt(enteredNum);
            if(Math.abs(enteredNumInInt)%2==0){
                System.out.println("This is an even number");
            }
            else{
                  System.out.println("This is not an even number");
            }
        } catch (IOException ex) {
            System.out.println("An IO Exception has occured");          
        }catch (NumberFormatException ex) {
            System.out.println("This is an invalid value");
           
        }
        
    }
    
}

Enter any value
0
This is an even number

Enter any value
73
This is not an even number

Enter any value
a
This is an invalid value

/*
 * Program3Class.java
 *
 * Created on February 27, 2009, 11:33 AM
 *
 */
package myjava;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/**
 *
 * @author cemember
 */
public class Program3Class {
    
    public static void main(String arg[]){
        
        String enteredNum=null;
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter any value ");
        try {
            enteredNum= br.readLine();
            Integer enteredNumInInt=Integer.parseInt(enteredNum);
            Integer numberToCheck =Math.abs(enteredNumInInt);
            
            /* static boolean expression evaluated outside 'for' loop */
            boolean staticexpr=false;
            /* dynamic boolean expression evaluated inside of 'for' loop */
            boolean dynamicexpr=true;
            
            /* Checks if the number is 1 */
            if(numberToCheck==1){
                System.out.println("1 is neither a composite number nor a prime number");
            } else if(numberToCheck > 1){
                
                
                /* checks if number is divisble by itself and 1 */
                staticexpr=(numberToCheck%numberToCheck==0)&&(numberToCheck%1==0);
                
               /* loop that checks whether the number is
                * divisible by all the numbers less than it
                * excluding itself and 1
                */                
                for(int i=(numberToCheck-1);(i!=0 && i!=1 && i<numberToCheck); i--){
                    
                    if(numberToCheck%i==0){
                        dynamicexpr=false;
                  //if numberToCheck is divisible by any number less than numberToCheck
                        break;
                    }
                    
                }
                if(staticexpr&&dynamicexpr){
                    System.out.println("This is a prime number");
                } else{
                    System.out.println("This is not a prime number");
                }
            } else{
                System.out.println("0 is not a prime number");
            }
        } catch (IOException ex) {
            System.out.println("An IO Exception has occured");
        }catch (NumberFormatException ex) {
            System.out.println("This is an invalid value");
        }
        
    }
    
}

Enter any value
a
This is an invalid value

Enter any value
0
0 is not a prime number

Enter any value
1
1 is neither a composite number nor a prime number

Enter any value
17
This is a prime number

Enter any value
57
This is not a prime number

mayurpathak

This is a good initiative, although may be I'm commenting too late.

#include<iostream.h>
void main()
{
int a,b;                            [COLOR=Red]// Declare two integers[/COLOR]
cin >> a >> b;                     [COLOR=Red]// Get input from user[/COLOR]
cout << a << endl << b;            [COLOR=Red]// print them[/COLOR]
}

[B]OUTPUT:[/B] 
5 3
5
3

#include<iostream.h>
void main()
{
int a;
cin >> a;                                           [COLOR=Red]//Get two integers from user[/COLOR]
if(a%2==0)                                         [COLOR=Red]//Check if it's divisible by two[/COLOR]
cout << "This is an even number";                 [COLOR=Red]// Print if it's even or odd number[/COLOR]
else
cout << "This is not an even number;
}

OUTPUT:
5
This is an not an even number
10
This is an even number

#include<iostream.h>
void main()
{
int a,flag=0;
cin >> a;                                              [COLOR=Red]//get the number[/COLOR]
if(cin.fail())                                         [COLOR=Red]//check if the input is a number[/COLOR]
{
cout << "The input is not a number";                  [COLOR=Red]// print an appropriate message[/COLOR]
exit(0);                                                   [COLOR=Red]//exit!![/COLOR]
}
if(a<0) a= -1*a;
if(a==0)
{
cout << "The number is not a prime number";       [COLOR=Red]//if the number is 0 or 1, print corresponding msg[/COLOR]
exit(0);
}
if(a==1)
cout << "The number is neither prime, nor composite";
else
{
for (i=2; i<=a/2; i++)
{
if(a%i==0)
{                                                [COLOR=Red]//Checking if the number is prime(in the for loop)[/COLOR]
flag=1;
cout << "The number is not a prime number";
exit(0)
}
}
}
if(flag==0)
cout << "The number is a prime number";               [COLOR=Red]//and the job is done!! Voila![/COLOR]
}

OUTPUT
a
The input is not a number
23
The number is a prime number
25
The number is not a prime number

#include<stdio.h>
void main()
{
int a;
printf("Enter two numbers\n ");//get the number from user
scanf("%d%d\n",&a,&b);
printf("The numbers are %d %d",a,b);//display it 
}

Enter two numbers
5 6
The numbers are 5 6

#include<stdio.h>
void main()
{
int num;
printf("Enter the number\n");//get the number
scanf("%d\n",&num);
if(num%2==0) //check whether its even or odd
{
printf("This is an even number ");
}
else
{
printf("This is not an even number");
}
}
 

Enter the number
10
This is an even number

Enter the number
5
This is not an even number

#include<stdio.h>
    #include<math.h>
  void  main()
    {
      int i,n,rem,sq;
        printf("enter the number ");
          scanf("%d",&n);
            sq=sqrt(n);
              for(i=2;i<=sq;i++)
                {
                     rem=n%i;
                          if(rem==0)
                      {
       printf("given number is not prime");
              exit(0);
                   }
                     }
                       printf("given number is prime");
                       }
 

enter the number 5
given number is prime

enter the number 8
given number is not prime

silverscorpion

Does the case matter? ie, if you give "Shalini" as inout, should it print "inilahS" or is "inilahs" fine?
And is spaces included in the input??

#include<iostream.h>
#include<string.h>
#include<conio.h>
void reverse();//function declaration for finding reverse of a number 
void revstring();//function declaration for finding reverse of string
void main()
{
int n;
char ch;
clrscr();
label:cout<<"\n\n\a\a********************MENU********************\a\a\n\n";        //display menu for the user to select one
cout<<"1.String\n";
cout<<"2.Number\n";
cout<<"\nSelect any one option to print the reverse\n";
cin>>n;
switch(n)
{
case 1:
revstring();          //String Reverse
goto label;
 
case 2:
reverse();        //Number Reverese
goto label;
 
default:
cout<<"\nEnter a valid option\n";                                  //default case if invalid option is selected
cout<<"\nProgram Terminated\n";
getch();
}
}
 
void reverse()
{
long num,s=0,r;
cout<<"\nEnter the number\n";                                    //get the number from user
cin>>num;
while(num>0)
{
r=num%10;
s=(s*10)+ r;                                                               //find the reverse of number
num=num/10;
}
cout<<"The reverse of the number is"<<" "<<s<<endl;     //print the reverse
}
 
void revstring()
{
int l=0,i,j;
char c,str[120],temp[120];
cout<<"enter the string to reverse:";                   //get the string from user
cin.clear();                                                       //clear the error bits for the cin input stream
cin.sync();                                                       //synchronize the input buffer, discarding any leftover characters in the buffer 
cin.getline(str,120);
while(str[l])                                                   //find length of string
{l++;
}
cout<<"\nlength of the string is"<<l<<endl;        //Display string length
j=l;
for (i=0;j>=0;i++,j--)
{
temp[i]=str[j];                                            //reverse string(using another variable)
}
cout<<"Reversed string is"<<" ";                  //display reversed string
for (i=0;i<=l;i++)
{
cout<<temp[i];
}
cout<<endl<<endl;
}

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select string
1
enter the string to reverse:a // character input
length of the string is1
Reversed string is a

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select string
1
enter the string to reverse:YamIni //input with upper and lower cases
length of the string is6
Reversed string is inImaY

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select string
1
enter the string to reverse:YamInI LakshmIPATHy //input with space
length of the string is19
Reversed string is yHTAPImhskaL InImaY

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select string
1
enter the string to reverse:miniy is a CRAZY Computer Science ENGINEER
length of the string is42
Reversed string is REENIGNE ecneicS retupmoC YZARC a si yinim

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select string
1
enter the string to reverse:Crazyengineers provide a common platform for enginee
rs all around the world..Its not about Social Networking..
length of the string is110
Reversed string is ..gnikrowteN laicoS tuoba ton stI..dlrow eht dnuora lla sree
nigne rof mroftalp nommoc a edivorp sreenigneyzarC

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select number
2

Enter the number //zero as input
0
The reverse of the number is 0

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //single digit number input
2
Enter the number
7
The reverse of the number is 7

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select number
2
Enter the number
23
The reverse of the number is 32

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select number
2
Enter the number
345
The reverse of the number is 543

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select number
2
Enter the number
5698
The reverse of the number is 8965

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select number
2
Enter the number
45097865 //multidigit number
The reverse of the number is 56879054

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //select number
2
Enter the number
45690
The reverse of the number is 9654

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //invaild option
3

Enter a valid option //alert user
Program Terminated

********************MENU********************
1.String
2.Number
Select any one option to print the reverse //invalid option
An
Enter a valid option //alert user
Program Terminated

import java.io.*;
import java.util.*;
class rev
{
public static void main(String args[])throws IOException
{
InputStreamReader isr=new InputStreamReader(System.in);
BufferedReader br=new BufferedReader(isr);
System.out.println("enter a string");
String s=br.readLine();
int i=s.length();
System.out.print("OUTPUT :");
for(i--;i>=0;i--)
System.out.print(s.charAt(i));
}
}

enter a string
ravi teja
OUTPUT :ajet ivar

public class Strev
{
    public static void main(String[] args)
    { 
   String str=args[0];
    String rev= new StringBuffer(str).reverse().toString();
    System.out.println("\nString before reverse: "+str);
    System.out.println("String after reverse: "+rev);
  }     
}  

C:\Documents and Settings\USER1\Desktop>javac Strev.java

C:\Documents and Settings\USER1\Desktop>java Strev "YamiNI" //input with mixed cases

String before reverse: YamiNI
String after reverse: INimaY

C:\Documents and Settings\USER1\Desktop>java Strev "Yamini LaksHMIPATHy" //input with space

String before reverse: Yamini LaksHMIPATHy
String after reverse: yHTAPIMHskaL inimaY

C:\Documents and Settings\USER1\Desktop>java Strev "1234" //number input

String before reverse: 1234
String after reverse: 4321

C:\Documents and Settings\USER1\Desktop>java Strev "10203330"

String before reverse: 10203330
String after reverse: 03330201

C:\Documents and Settings\USER1\Desktop>java Strev "9"

String before reverse: 9
String after reverse: 9

C:\Documents and Settings\USER1\Desktop>java Strev "a" //character input

String before reverse: a
String after reverse: a

 Private Sub Command1_Click()
Dim num As Integer, rnum As Integer, d As Integer
 'declaring the variables
 
num = Val(txtnum.Text)
 'converting the text into number
 
rnum = 0 ' initialising the reverse number with zero
Do While num > 0  'initialising the loop checking the condition.
 d = num Mod 10
 rnum = rnum * 10 + d
 num = num / 10
Loop
 txtrnum.Text = rnum ' displaying the result in concerned text
 
 
End Sub

  when we will enter 1234 
it will show  4321 

import java.io.*;
class Sqcu
{
public static void main(String args[]) throws IOException
{
try
{
System.out.println("*************MENU******************");
System.out.println("!.Square");                [COLOR=red]//display menu[/COLOR]
System.out.println("2.Cube");
System.out.println("Enter your choice");   [COLOR=red]//get the choice[/COLOR]
DataInputStream di=new DataInputStream(System.in);
int choice=Integer.parseInt(di.readLine());
switch(choice)
{
 
case 1:
System.out.println("Enter the number");  [COLOR=red]//get the number from user[/COLOR]
DataInputStream dis=new DataInputStream(System.in);
double x= Float.parseFloat(dis.readLine());
System.out.println("Square of number is " +(x*x)); [COLOR=red]//print the square[/COLOR]
break;
 
case 2:
System.out.println("Enter the number"); [COLOR=red]//get the number from user[/COLOR]
DataInputStream d=new DataInputStream(System.in);
double y= Float.parseFloat(d.readLine());
System.out.println("Cube of number is " +(y*y*y)); [COLOR=red]//print cube[/COLOR]
break;
 
default:
System.out.println("Enter a valid choice");  [COLOR=red]//default case[/COLOR]
System.out.println("Program terminated");
}
}
catch(Exception e){
System.out.print(e.getMessage());
System.out.println("is not a numberic value");[COLOR=red] //print message[/COLOR]
System.out.println("Enter a valid number");
}
}
}

C:\Documents and Settings\USER1\Desktop>java Sqcu
*************MENU******************
!.Square
2.Cube
Enter your choice //select square
1
Enter the number
10
Square of number is 100.0

C:\Documents and Settings\USER1\Desktop>java Sqcu
*************MENU******************
!.Square
2.Cube
Enter your choice //select square
1
Enter the number
5.77
Square of number is 33.29289977989197


C:\Documents and Settings\USER1\Desktop>java Sqcu
*************MENU******************
!.Square
2.Cube
Enter your choice //select cube
2
Enter the number
7
Cube of number is 343.0

C:\Documents and Settings\USER1\Desktop>java Sqcu
*************MENU******************
!.Square
2.Cube
Enter your choice //select cube
2
Enter the number
9.99
Cube of number is 997.0029304727112

C:\Documents and Settings\USER1\Desktop>java Sqcu
*************MENU******************
!.Square
2.Cube
Enter your choice
1
Enter the number //non numeric input
e
For input string: "e"is not a numberic value
Enter a valid number

C:\Documents and Settings\USER1\Desktop>java Sqcu
*************MENU******************
!.Square
2.Cube
Enter your choice
2
Enter the number //non numeric input
rt
For input string: "rt"is not a numberic value
Enter a valid number

C:\Documents and Settings\USER1\Desktop>java Sqcu
*************MENU******************
!.Square
2.Cube
Enter your choice //invalid choice
4
Enter a valid choice
Program terminated

 Sub find()
 'programmed by safwan
 ' program to find square and cube of given number
 ' this is subroutin and which will find out wheathre
 'programm has to find out cube or sqaure
 ' you can freely distribute this programm no copyright.
 ' sifus.
 Dim intnum As Integer, intcube As Integer, intsqr As Integer
 intnum = Val(txtnum.Text)
 
 
 If optsq.Value = True Then
    intsqr = intnum * intnum
    txtop.Text = intsqr
 ElseIf optcub.Value = True Then
   intcube = intnum * intnum * intnum
   txtop.Text = intcube
 End If
 
 
 
 
End Sub
Private Sub cmdclear_Click()
'this will clear all text boxes and option buttons
txtop.Text = " "
txtnum.Text = " "
optcub.Value = False
optsq.Value = False
End Sub
Private Sub cmdfind_Click()
' we are calling the subroutine
Call find
End Sub

 when i input 5 into first textbox
and if we chose square optionbutton then 
output will be 25
when i chose cube optionbutton then 
other textbox will show me 125.

#include<stdio.h>
main()
{
float a;
int x;
printf("Enter a number");
x=scanf("%f", &a);
if(x==1)
{
printf("The square of the number is %f\n", a*a);
printf("The cube of the number is %f\n", a*a*a);
}
else if(x==0)
{
printf("The input is non-numeric");
}

#include<iostream.h>
void main()
{
float a;
int x;
cout<<"Enter a number";
cin>>a;
if(cin.fail())
{
cout<<"Invalid input";
exit(0);
}
else
{
cout<<"The square of the number is "<< a*a << endl;
cout<<"The cube of the number is "<< a*a*a << endl;
}

#include<stdio.h>
main()
{
char a[50];
int i,l
printf("Enter a string");
gets(a);
for(i=1; a[i]!='\0'; i++);
l=i;
printf("The length of the string is %d\n", l;
printf("The reversed string is\n");
for(i=l-1; i>=0)
printf("%c",a[i]);
}

#include<stdio.h>
#include<ctype.h>
#include<math.h>
#include<conio.h>
void main()
{
int n,i,s,c;
clrscr();
printf("Enter the number upto which you want to display square and cube\n");              [COLOR=red]//get the number[/COLOR]
scanf("%d",&n);
if(isalpha(n))        [COLOR=red]//check whether it is an alphabet[/COLOR]
{
printf("enter a numeric character\n"); 
}
else
{
printf("\tNUMBER\tSQUARE\tCUBE\t\n"); 
for(i=0;i<=n;i++)
{
s=pow(i,2);
c=pow(i,3);
printf("\t%d\t%d\t%d\t\n",i,s,c );  [COLOR=red]  //print square and cube[/COLOR]
}}
getch();
}

/*
File Name: Main.java
@Author: Ashutosh Shukla
*/
import java.io.*;
class Main
{
	public static void main(String args[])
	{
		int number=0,i,j;

		//Loop to read from user till number is greater than or equal to 2
		do
		{
			try
			{
				System.out.print("Enter the number : ");
				BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
				number=Integer.parseInt(br.readLine());
			}
			catch(Exception e)
			{
				e.printStackTrace();
			}
		}
		while(number<=1);
		System.out.println("The various prime nos between 1 and "+number+" are : ");

		//Loop to check for each and every number
		for(i=2;i<number;i++)
		{
			//Loop to check whethar the number is prime or not
			for(j=2;j<i;j++)
			{
				if(i%j==0)
					break;
			}
			if(j==i)
				System.out.print(i+" ");
		}
		System.out.println();
	}
}

/*@Author: Ashutosh*/
#include<iostream.h>
#include<conio.h>
void main()
{
	int n1,n2;
	clrscr();
	cout<<"Enter N1 : ";
	cin>>n1;
	cout<<"Enter N2: ";
	cin>>n2;
	cout<<"The entered numbers are : "<<n1<<" and "<<n2;
	getch();
}

/*@Author: Ashutosh*/
#include<iostream.h>
#include<conio.h>
void main()
{
	int n;
	clrscr();
	cout<<"Enter any number : ";
	cin>>n;
	if(n%2==0)
		cout<<"The number is even number.";
	else
		cout<<"The number is not even an number.";
	getch();
}

#include<iostream.h>
#include<conio.h>
#include<string.h>
void main()
{
	char str[80];
	cout<<"Enter any string : ";
	cin>>str;
	cout<<"The reverse is : "<<strrev(str);
	getch();
}

#include<iostream.h>
#include<conio.h>
#include<ctype.h>
void main()
{
	int n;
	clrscr();
	cout<<"Enter any number : ";
	cin>>n;
	if(!isalnum(n))
	{
		cout<<"The sqaure of number is : "<<n*n;
		cout<<"\nThe cube of number is : "<<n*n*n;
	}
	else
		cout<<"Invalid number.";
	getch();
}

import java.io.*;
class prime
{
public static void main(String args[])
{
try
{
System.out.println("Enter the last number");                               [COLOR=red]//get input from user[/COLOR]
DataInputStream dis=new DataInputStream(System.in);
int n=Integer.parseInt(dis.readLine());
int i,num=1;
while(num<=n)               
{
i=2;
while(i<=num)
{
if(num%i==0)                                                                          [COLOR=red]//check whether is number is prime or not[/COLOR]
break;
i++;
}
if(i==num)
System.out.println( "  " +num+ "is a Prime Number");            [COLOR=red]//display if number is prime[/COLOR]
num++;                                                   
}
}
catch (Exception e){}
}
}

C:\Documents and Settings\USER1\Desktop>java prime
Enter the last number
25
2is a Prime Number
3is a Prime Number
5is a Prime Number
7is a Prime Number
11is a Prime Number
13is a Prime Number
17is a Prime Number
19is a Prime Number
23is a Prime Number

Private Sub Form_Load()
 'this programm is program to find prime noumbers till
 '100
 'This programe is programmed and coded by
 'Safwan patel
 'you can share this programm no copyrights
 
MsgBox ("PLease enter any noumber under 100 for finding prime no.")
MsgBox ("this programm will find prime noumbers under 100")
End Sub
Private Sub cmdFind_Click()
 ' this code is 4 event when user will click this button
 Dim inti As Integer, intnum As Integer
  ' data verification related to use
  intnum = Val(txtnum.Text)
   ' converts text into number and take it in use
  List1.AddItem 1
  List1.AddItem 2
  List1.AddItem 3
  List1.AddItem 5
  List1.AddItem 7
   ' we are adding this abouve itemes in list1 as
   'we know already this noumbers are prime
   'and also we dont want to waset pc time
 For inti = 4 To intnum Step 1
 
 
 
    If inti Mod 2 = 0 Then  'we are moving all no. which are divisible by 2
      List2.AddItem inti
    Else
         If inti Mod 3 = 0 Then 'after taking all odd no.
                                'we are moving all no. which are divisible by 3
            List2.AddItem inti
         Else
              If inti Mod 5 = 0 Then
                 'agin we are moving all no. which are divisible by 5
                List2.AddItem inti
              Else
                   If inti Mod 7 = 0 Then
                     ' we are moving all no. which are divisible by 7
 
                      List2.AddItem inti
                   Else
                       If inti Mod 9 Then
                        'agin we are moving all no. which are divisible by 9
                          List2.AddItem inti
                       Else
                            List1.AddItem inti
                       End If
                  End If
              End If
         End If
    End If
Next inti
 
 
 
End Sub
 
 

1
1
2
3
5
7
11
13
17
19
23
29
 

"""
Program : Write a program that accepts a number from user and then find out all the 
prime numbers between 1 and the input no. Ex user enters 100 as a number , then 
program should calculate all the prime numbers between 1 and 100.
Language : Python
Author : komputergeek
"""
print "Enter number 1 :"
num1=input()    #Take input from user 
if type(num1).__name__ != 'int' :     #Check whether the number is integer
    print "Not a number"
    quit()
print "Enter number 2 :"

num2=input()    #Take input from user
if type(num2).__name__ != 'int' :    #Check whether the number is integer
    print "Not a number"
    quit()

print "Prime numbers in range : "

for j in range(num1,num2):    #Run loop for all numbers in accepted range
    flag=True
    for i in range(2,j):
        if (j % i == 0):        #Check whether number is divisible by any other number
            flag=False        #if yes make flag false
            break
    if j < 2 :
        flag=False
    if flag == True :
        print j
"""
Output :


Enter number 1 :
2
Enter number 2 :
30
Prime numbers in range : 
2
3
5
7
11
13
17
19
23
29

"""

shalini_goel14

@Komputergeek - Man! Well done,Can you start a class or a thread on Python?

"""
Program : Write a program that will calculate both the square and cube of any input 
number and print it on console. Again check for non numeric numbers also.
Language : Python
Author : komputergeek
"""
print "Enter number :"
num=input()    #Take input from user 
if type(num).__name__ != 'int' :     #Check whether the number is integer
    print "Not a number"
    quit()
print num, "^2 = " , num*num
print num, "^3 = " , num*num*num
"""
Output 1 :

Enter number :
3
3 ^2 =  9
3 ^3 =  27

Output 2 :

Enter number :
1
1 ^2 =  1
1 ^3 =  1

Output 3 :

Enter number :
101
101 ^2 =  10201
101 ^3 =  1030301

"""

"""
Program : Write a program that prints the reverse of the entered string or number in 
console. If entered value consists of single character, it should display same value in 
output.
Language : Python
Author : komputergeek
"""
str=raw_input("Enter string :")    #Take input from user 
str2=""
for i in range(len(str)-1,-1,-1):
    str2 = str2 + str[i]
print "Reverse is : ", str2
"""
Output 1 :

Enter string :python
Reverse is :  nohtyp

Output 2 :

Enter string :1
Reverse is :  1

"""

livewire09

Yes for programming the basics play a lot of importance.So it is right to understand the roots of the language and then get on with the rest....

safwan

hay shalini , when new programe you are going to post i am waiting for it?

/* Program is written by: Arvind Kumar
   Language used: C++
*/


#include <iostream>
using namespace std;

int main ()
{
    int a;
  cout << "Please enter an integer to check if it's EVEN or ODD: ";     
  cin >> a;                     

  if ( a % 2== 0 )   

       cout << "\nThe number you entered is '"<< a << "' and it is a EVEN number" <<endl;
  else               

       cout << "\nThe number you entered is '"<< a << "' and it is a ODD number  "<<endl;

  return 0;
}

/* Program is written by: Arvind Kumar
   Language used: C++
*/

#include <iostream>
#include <limits>

using namespace std;
int main()
{
int no,i;

cout<<" Enter a Number to check if it's prime number or not: ";
cin>>no;

  cin.ignore(numeric_limits<int>::max(), '\n');

  if (!cin || cin.gcount() != 1)
  {
    cout << "\n Error: Your input is not a numeric value!!!! ";
    cout<<"\n\n The Possible cause of this ERROR could be one of the following:";
    cout<<"\n\t -You could have Entered a Charatcter";
    cout<<"\n\t -You could have Entered a symbol like @,#,$";
    cout<<"\n\t -If you have Entered a decimal value then it would be rounded off and will get the output";
  }
  else
    cout << "\nYour entered number: " << no;

if(no==1)
{
    cout<<"\nThe number '"<<no<<"' is neither prime nor composite";
}

i=2;
while(i<=no-1)
{
if(no%i==0)
  {
    cout<<"\nThe number '"<<no<<"' is not a PRIME number";
    break;
  }
i=i+1;
}
if(no==i)
{
  cout<<"\nThe number '"<<no<<"' is a PRIME number";
}

return 0;
}

/* Program is written by: Arvind Kumar
   Language used: C++
*/
#include <string>
#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
    string rev;
    cout<<"Enter any data you want to print in reverse order: ";
    cin>> rev;
    cout<<"Here is the data you have entered: ";

    string s(rev.begin(),rev.end());
    // iterate through all of the characters
    string::iterator pos;
    for (pos = s.begin(); pos != s.end(); ++pos)
    {
        cout << *pos;
    }
    cout << endl;
    reverse (s.begin(), s.end());
    cout << "Here is the reverse of the data you entered: " << s << endl;

}

/* Program is written by: Arvind Kumar
   Language used: C++
*/
#include<iostream>
#include <limits>

using namespace std;

int main()
{
    int a;
    cout<<"Enter the number to find the square and cube of the number: ";
    cin>>a;

  cin.ignore(numeric_limits<int>::max(), '\n');

  if (!cin || cin.gcount() != 1)
  {
    cout << "\n Error: Your input is not a numeric value!!!! ";
    cout<<"\n\n The Possible cause of this ERROR could be one of the following:";
    cout<<"\n\t -You could have Entered a Charatcter";
    cout<<"\n\t -You could have Entered a symbol like @,#,$";
    cout<<"\n\t -You could have Entered a decimal value";
  }

else
{
    cout<<"\nThe square of the number is: "<<a*a<<endl;
    cout<<"\nThe cube of the number is: "<<a*a*a<<endl;
}
    return 0;
}

/* 
   Program is written by: Arvind Kumar
   Language used: C++
*/
#include <iostream>
#include <limits>

using namespace std;
int main()
{
int no,i;
int ch;

cout<<" Enter the range of MAX Number of Prime numbers you want to generate : ";

    cin>>no;
    cout <<"\n You want Prime numbers between the range of '1 - " << no<<"'"<<endl;
    cout<<"\n Here is the list of PRIME numbers you wanted:"<<endl<<endl;

for(ch=1;ch<=no;ch++)
{


if(ch==1)
{
    cout<<"\t"<< ch<<" is neither prime nor composite"<<endl;
}

i=2;
while(i<=ch-1)
{
if(ch%i==0)
  {
    break;
  }
i=i+1;
}
if(ch==i)
{
  cout<<"\t"<< ch<<" is a PRIME number"<<endl;
}
}
return 0;
}

goyal786

here is a program by me
#include<iostream.h>
#include<conio.h>
int main()
{
clrscr();
int a,b;
char c;
cout<<"Enter two no's which you like to print"<<endl;
cin>>a;
cin>>b;
cout<<"Two no's are"<<endl;
cout<<a<<" "<<b;
getch();
}
output
Enter two no's which you like to print
2
3
Two no's are
2 3

shalini_goel14

Here goes the next two simple programs for month of "May"

Program # 7 Write a program to find out the factorial of any input number without recursion.

Program # 8 Write a program to find out the factorial of any input number using recursion.

 
/* Written by : Arvind (slashfear)
   Language: C++  */

#include <iostream>
using namespace std;

int factorial(int n)
{
   int result = 1;
   for (int i = n; i > 0; i--)
   result = result * i;
   return result;
}

main()
{
    int n;
    cout << "Enter a non-negative integer: ";
    cin >> n;
    cout << "Factorial of " << n << " is " << factorial(n) << endl;
    return 0;
  }

Output:

Enter a non- negative integer: 2
Factorial of 2 is 2

Enter a non- negative integer: 0
Factorial of 0 is 1

[B]/* Written by : Arvind (slashfear)
   Language: C++  */

[/B][B]#include <iostream>
  using namespace std;

  int factorial(int n)    
  {
    if (n == 0) return 1;
    return n * factorial(n-1);
  }

  main()
  {
    int n;
    cout << "Enter a non-negative integer: ";
    cin >> n;
    cout << "Factorial of " << n << " is " << factorial(n) << endl;
    return 0;
  }
[/B]

Output:

Enter a non- negative integer: 1
Factorial of 1 is 1

Enter a non- negative integer: 3
Factorial of 3 is 6
 

[B]/* Written by : Arvind (slashfear)
   Language: C++  */

[/B][B]#include <iostream>
  using namespace std;

  int factorial(int n)
  {
    int return_value;
    cout << "Called factorial(" << n << ")\n"; 
    if (n == 0) 
     {
      return_value = 1;
     } 
    else 
       {
      return_value = n * factorial(n-1);
       }
    cout << "Factorial(" << n << ") is returning " << return_value << endl;  
    return return_value;
  }

  main()
  {
    int n;
 
    cout << "Enter a non-negative integer: ";
    cin >> n;
    cout << "Factorial of " << n << " is " << factorial(n) << endl;  
    return 0;
  }
[/B]

Output:

Called factorial(2)
Called factorial(1)
Called factorial(0)
Factorial(0) is returning 1
Factorial(1) is returning 1
Factorial(2) is returning 2
Factorial of 2 is 2
 

shalini_goel14

Yo ! Quite impressive work Slashfear 😁. Keep it up.

Where are our rest of CE programmers ? 😉 I am waiting for your programs also

/* Code
import java.io.*;
class Print
{
   public static void main(String args[])throws IOException // input/output Exception handling
   {
      DataInputStream d= new DataInputStream(System.in);
      System.out.println("Enter 1st no.");
      int a=Integer.parseInt(d.readLine()); // conversion from string to integer
      System.out.println("Enter 2nd no.");
      int b=Integer.parseInt(d.readLine());
      System.out.println("Do You want to print the nos?");
      String s=d.readLine();
      if(s.equals("y") || s.equals("Y"))
      {
        System.out.println("Numbers are "+a+" & "+b);  //printing of numbers to the console
      }
   }
}
*/

/*program #7 to calculate the factorial of any number n by the user without  recursion */
import java.io.*;
class Factnor
{
   public static void main(String args[])throws IOException      //exception handling
   {
      double fact=1;
      DataInputStream d= new DataInputStream(System.in);
      System.out.println("enter no. whose factorial is to be found");
      int n=Integer.parseInt(d.readLine());
      if(n==0) fact=1;
      else
      {
       for(int i=n;i>=1;i--)                                                             //calculation of factorial
       {
          fact=fact*i;
       }
      }
      System.out.println("factorial of "+n+" is "+fact);             //prints the result
   }
}

Output Program # 7
enter no. whose factorial is to be found
32
factorial of 32 is 2.6313083693369355E35

 /* program #8 to calculate the factorial of any number n by the user using recursion */
import java.io.*;
class Factr
{
  public static double f(int a)   // method definition
  {
    if(a==0)
    return 1;
    else
    return (a*f(a-1));
  }
  public static void main(String args[])throws IOException  //exception handling
  {
    DataInputStream d = new DataInputStream(System.in);
    System.out.println("enter no. whose factorial is to be found"); //number as input
    int n= Integer.parseInt(d.readLine());
    System.out.println("factorial of "+n+" is "+f(n));    //prints the result
  }
}
Output Program # 8
enter no. whose factorial is to be found
32
factorial of 32 is 2.6313083693369355E35

slashfear

Please check and let me know (I posted on 14th April could you please toggle back some post you can find my programs😲)

  Private Sub Print_Click()
Dim dblnum As Double, dbli As Double
 Dim dblf As Double
 
   dblnum = Val(Text1.Text)
    
    f = 1
    
     For i = 1 To dblnum
     
       dblf = dblf * i
       
       List1.AddItem dblf
       
    Next i
    
    
    
    
    
End Sub

1,2,6

[B]
/* Written by: Arvind(slashfear)
   Language: C++      */

#include <iostream>
using namespace std;

void factors(long n,long f=1)
{
     if(n%f==0)
          cout<<f<<"  ";

     if(f==n)
          return;

     factors(n,f+1);
}

int main()
{
    int n;
    cout<<"Enter the Number to find its factors: ";
    cin>>n;
    factors(n);
    return 0;
}
[/B]

[B]
Enter the Number to find its factors:10
1 2 5 10[/B]

[B]/* Written by: Arvind(slashfear)
   Language: C++      */

#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
   cout << setw ( 4 ) << right << "|";
   for ( int i = 2; i <= 20 ; ++i ) cout << left << setw ( 5 ) << i ;       
   cout << "\n------------------------------------------------------\n" ;

   for ( int i = 1; i <= 10; ++i )
   {
      cout << setw ( 3 ) << left << i << '|' ;
      for ( int j = 1; j <= 10 ; ++j )
         cout << setw ( 5 ) << left << i*j ;
      cout << "\n   |\n" ;
   }
}[/B]

 [B]     2      3      4      5      6      7      8      9      10
-----------------------------------------------------------------------------
1|   2      3      4      5      6      7      8      9      10

2|   4      6      8    10    12    14    16     18    20

3|   6      9      12    15    18    21    24    27    30    

4|   8      12     16    20    24    28    32    36    40

5|   10    15     20    25    30    35    40    45    50

6|   12    18     24    30    36    42    48    54    60

7|   14    21     28    35    42    49    56    63     70

8|   16    24     32    40    48    56    64    72    80

9|   18    27     36    45    54    63    72    81     90

10| 20    30    40    50    60    70    80    90    100[/B]

[B]/* Written by: Arvind(slashfear)
   Language: C++      */
#include <iostream>

using namespace std;


int main()
{
    int i;
    int j;
    cout<<"Enter the Multiplication table you want to see: ";
    cin>>i;
    cout<<endl;
    cout<<"The Multiplication Tables of "<<i<<" is as follows:";

    for(j=1;j<=10;j++)
    {
        cout<<endl;
        cout<<i<<" x "<<j<<" = "<<i*j;
        cout<<endl;
    }
    return 0;
}[/B]

[B]
Enter the Multiplication table you want to see: 100

The Multiplication Tables of 100 is as follows:

100 x 1 = 100

100 x 2 = 200

100 x 3 = 300

100 x 4 = 400

100 x 5 = 500

100 x 6 = 600

100 x 7 = 700

100 x 8 = 800

100 x 9 = 900

100 x 10 = 1000[/B]

//program to find factors of any input number
import java.io.*;
class Factor
{
   public static void main(String[] args)throws IOException
   {
       int n;
       InputStreamReader isr = new InputStreamReader(System.in);
       BufferedReader br = new BufferedReader(isr);
       System.out.print(" Enter a number ");
       n=Integer.parseInt(br.readLine());
       System.out.println(" ");
       System.out.print("Factors are ");
       for(int i=1; i<=n;i++)
       if(n%i==0) System.out.print(i+" ");
   }
}

//program to print multiplication tables of 2 to 20.
import java.io.*;
class Multtable
{
   public static void main(String[] args)
   {
     int n=2;
     System.out.print("      ");
     for(int i=1; i<=10;i++)
     System.out.print(i+" ");
     System.out.println(" ");
     while(n<21)
     {
       System.out.print(n+"    ");
       for(int j=1; j<=10;j++)
       {
         System.out.print(n*j+" ");
       }
       System.out.println(" ");
       n++;
     }
   }
}

shalini_goel14

Guys(rest of CEans) post your programs also and beat this guy slashfear in programming. 😀

shalini_goel14

Guys(rest of CEans) post your programs also and beat this guy slashfear in programming. 😀

CEMember

Hey Shalini, Please wait for my programs also. I will post them soon. Actually I was going very busy so could not log into this site .😔

//To print the factors of a number using C++
#include<iostream.h>
#include<conio.h>
main()
{
int n,i;
cout<<"enter a number";
cin>>n;
cout<<"\nThe factors are  ";
for(i=1;i<=n;i++)
{
                 if(n%i==0)
                 cout<<i<<"\t";
}
getch();
}

enter a number14
The factors are  1         2         7         14

//Printing tables using C++
#include<iostream.h>
#include<conio.h>
main()
{
int j,i;
for(i=2;i<=20;i++)
{
                 cout<<"\n\nTable "<<i<<"\n";
                 for(j=1;j<=10;j++)
                 cout<<j<<"*"<<i<<"="<<i*j<<"\n";
}
getch();
}

Private Sub cmdPrint_Click()
 ' programed by Safwan Patel
 ' no Copyright
 'this software is FLOSS
 'Programe to print multiplication in List Box
 'Writeen on 16/05/09
 
  Dim intn As Integer, intcount As Integer, intr As Integer
      'Declaration of variable
      
    For intn = 1 To 20
       intcount = 1
       r = 0
       Do While intcount <= 10
                intr = intcount * intn
               
                lst1.AddItem intn & "x" & intcount & "=" & intr
            
                intcount = intcount + 1
      Loop
  Next intn
  
      
End Sub

1 X 1= 1
1x2=2
......
like this till 20x10=200

Private Sub Command1_Click()
 
  
 Dim num As Integer, i As Integer
    num = Val(Text1.Text)
       For i = 1 To 10
            List1.AddItem num & "x" & i & "=" & num * i
       Next i
       
End Sub

5X1=5
.....etc

package myjava;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/**
 *
 * @author CEMember
 */
public class FactorialWithoutRecursion {
 
    public static void main(String arag[]){
 
        int number;
        double factorial=1D;
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        try {
 
            number=Integer.parseInt(br.readLine());
            System.out.println("Entered number is::"+number);
 
            /* Checks if the number is a negative number */
            if(number < 0){
            System.out.println("Negative number is entered."); 
            System.exit(0);
            }
 
            /* Checks if the number is 0 or 1 */
            if(number==0 || number==1){
 
                System.out.println("Factorial of "+number+" is 1");
            }else{
                for(int i=1;i<=number;i++){
                    factorial*=i;
                }
                System.out.println("Factorial of "+number+" is "+factorial);
            }
 
 
        } catch (NumberFormatException ex) {
            System.out.println("Invalid number is entered.");
        }
        catch (IOException ex) {
            System.out.println("IOException occured");
        }
    }
}

abc
Invalid number is entered.

-59
Entered number is::-59
Negative number is entered.

170
Entered number is::170
Factorial of 170 is 7.257415615307994E306

171
Entered number is::171
Factorial of 171 is Infinity

0
Entered number is::0
Factorial of 0 is 1

1
Entered number is::1
Factorial of 1 is 1

package myjava;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/**
 *
 * @author CEMember
 */
public class FactorialWithRecursion {
 
    public static void main(String arag[]){
 
        int number;
 
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        try {
 
            number=Integer.parseInt(br.readLine());
            System.out.println("Entered number is::"+number);
 
            /* Checks if the number entered is 0 or more than that */
            if(number >=0){
                System.out.println("Factorial of "+number+" is "+recursiveFact(number));
            } else{
                System.out.println("Negative number is entered.");
            }
        } catch (NumberFormatException ex) {
            System.out.println("Invalid number is entered.");
        } catch (IOException ex) {
            System.out.println("IOException occured");
        }
    }
 
    /* Recursive method called to find out the factorial of a number */
    public static double recursiveFact(int number){
 
        if(number==0 || number==1){
            return 1;
        } else{
            return  number * recursiveFact(number-1);
        }
 
 
    }
}

abc
Invalid number is entered.

-59
Entered number is::-59
Negative number is entered.

170
Entered number is::170
Factorial of 170 is 7.257415615307994E306

171
Entered number is::171
Factorial of 171 is Infinity

0
Entered number is::0
Factorial of 0 is 1.0

1
Entered number is::1
Factorial of 1 is 1.0

package myjava;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/**
 *
 * @author CEMember
 */
public class FindFactorsProgram {
 
    public static void main(String arag[]){
 
        int number;
 
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        try {
 
            number=Integer.parseInt(br.readLine());
            System.out.println("Entered number is::"+number);
 
 
            /* Checks if the number entered is 0 or more than that */
            if(number >=0){
                System.out.print("Factors of "+number+" are [ ");
                for(int i=1;i<=number;i++){
                    if(number % i==0){
                        System.out.print(i+" ")  ;
                    }
                }
                System.out.print("] ")  ;
            }
            else{
                System.out.println("Negative number is entered.");
            }
 
 
 
        } catch (NumberFormatException ex) {
            System.out.println("Invalid number is entered.");
        } catch (IOException ex) {
            System.out.println("IOException occured");
        }
    }
 
}

abc
Invalid number is entered.

-59
Entered number is::-59
Negative number is entered.

100000000
Entered number is::100000000
Factors of 100000000 are [ 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 625 640 800 1000 1250 1280 1600 2000 2500 3125 3200 4000 5000 6250 6400 8000 10000 12500 15625 16000 20000 25000 31250 32000 40000 50000 62500 78125 80000 100000 125000 156250 160000 200000 250000 312500 390625 400000 500000 625000 781250 800000 1000000 1250000 1562500 2000000 2500000 3125000 4000000 5000000 6250000 10000000 12500000 20000000 25000000 50000000 100000000 ]

package myjava;
/**
 *
 * @author CEMember
 */
public class MultiplicationTable {
 
    public static void main(String[] args){
 
        System.out.println("Multiplication table for numbers from 2 to 20");
          System.out.println("-------------------------------------------");
       for(int i=2;i<=20;i++){
 
       System.out.print(i+" = [ ");
       for(int j=1;j<=10;j++){
           System.out.print(j*i+" ");
       }
       System.out.println("]");
 
    }
     }
}
 

Output:
Multiplication table for numbers from 2 to 20
-------------------------------------------
2 = [ 2 4 6 8 10 12 14 16 18 20 ]
3 = [ 3 6 9 12 15 18 21 24 27 30 ]
4 = [ 4 8 12 16 20 24 28 32 36 40 ]
5 = [ 5 10 15 20 25 30 35 40 45 50 ]
6 = [ 6 12 18 24 30 36 42 48 54 60 ]
7 = [ 7 14 21 28 35 42 49 56 63 70 ]
8 = [ 8 16 24 32 40 48 56 64 72 80 ]
9 = [ 9 18 27 36 45 54 63 72 81 90 ]
10 = [ 10 20 30 40 50 60 70 80 90 100 ]
11 = [ 11 22 33 44 55 66 77 88 99 110 ]
12 = [ 12 24 36 48 60 72 84 96 108 120 ]
13 = [ 13 26 39 52 65 78 91 104 117 130 ]
14 = [ 14 28 42 56 70 84 98 112 126 140 ]
15 = [ 15 30 45 60 75 90 105 120 135 150 ]
16 = [ 16 32 48 64 80 96 112 128 144 160 ]
17 = [ 17 34 51 68 85 102 119 136 153 170 ]
18 = [ 18 36 54 72 90 108 126 144 162 180 ]
19 = [ 19 38 57 76 95 114 133 152 171 190 ]
20 = [ 20 40 60 80 100 120 140 160 180 200 ]

#include<iostream>

using namespace std;

int main()
{
    int a[21][11];

    for(int i=2;i<=20;i++)
    {
        for(int j=1;j<=10;j++)
        {
            a[i][j]=i*j;
        }
    }

    for(int i=2;i<=20;i++)
    {
        cout<<"---------------------------------------------------------------------------\n";
        for(int j=1;j<=10;j++)
        {
            if(j!=1)
                cout<<"\t|";
            cout<<a[i][j];
        }

        cout<<endl;
    }

    return 0;
}

---------------------------------------------------------------------------
2     |4     |6     |8     |10    |12    |14    |16    |18    |20
---------------------------------------------------------------------------
3     |6     |9     |12    |15    |18    |21    |24    |27    |30
---------------------------------------------------------------------------
4     |8     |12    |16    |20    |24    |28    |32    |36    |40
---------------------------------------------------------------------------
5     |10    |15    |20    |25    |30    |35    |40    |45    |50
---------------------------------------------------------------------------
6     |12    |18    |24    |30    |36    |42    |48    |54    |60
---------------------------------------------------------------------------
7     |14    |21    |28    |35    |42    |49    |56    |63    |70
---------------------------------------------------------------------------
8     |16    |24    |32    |40    |48    |56    |64    |72    |80
---------------------------------------------------------------------------
9     |18    |27    |36    |45    |54    |63    |72    |81    |90
---------------------------------------------------------------------------
10    |20    |30    |40    |50    |60    |70    |80    |90    |100
---------------------------------------------------------------------------
11    |22    |33    |44    |55    |66    |77    |88    |99    |110
---------------------------------------------------------------------------
12    |24    |36    |48    |60    |72    |84    |96    |108   |120
---------------------------------------------------------------------------
13    |26    |39    |52    |65    |78    |91    |104   |117   |130
---------------------------------------------------------------------------
14    |28    |42    |56    |70    |84    |98    |112   |126   |140
---------------------------------------------------------------------------
15    |30    |45    |60    |75    |90    |105   |120   |135   |150
---------------------------------------------------------------------------
16    |32    |48    |64    |80    |96    |112   |128   |144   |160
---------------------------------------------------------------------------
17    |34    |51    |68    |85    |102   |119   |136   |153   |170
---------------------------------------------------------------------------
18    |36    |54    |72    |90    |108   |126   |144   |162   |180
---------------------------------------------------------------------------
19    |38    |57    |76    |95    |114   |133   |152   |171   |190
---------------------------------------------------------------------------
20    |40    |60    |80    |100   |120   |140   |160   |180   |200

savior

Shalilni, you asked for my name and address through a private message, but I am unable to reply because of the following error:
[Qoute] shalini_goel14 has chosen not to receive private messages or may not be allowed to receive private messages. Therefore you may not send your message to him/her.
how do I reply?

shalini_goel14

PS: You need to go for Java class. These languages are too outdated.😉