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@vishal-pysGmK • Aug 30, 2012
@prototype-G9Gn5k • Aug 30, 2012
@sndgpr26-Yb3sXd • Aug 30, 2012
no i dont know itVishal0203Is this your doubt? or you already know it?
@sndgpr26-Yb3sXd • Aug 30, 2012
sir[Prototype]There are various alternatives. Command line arguments, fgets etc.
@vishal-pysGmK • Aug 30, 2012
There are various alternatives. Command line arguments, fgetswrong info:
@vishal-pysGmK • Aug 30, 2012
no i dont know itNote:: I'm not using scanf() but I'm using fscanf().. is that okay??
actually some one had asked me to do this
but i was failed
#include "stdio.h"
#include "conio.h"
int main()
{
int n,a;
fscanf(stdin,"%d",&n);
a=2*n;
fprintf(stdout,"%d",a);
getch();
return 0;
}
@vishal-pysGmK • Aug 30, 2012
@prototype-G9Gn5k • Aug 30, 2012
You got the info, give it a try yourselves. We're here to help you learn & what you're asking is not the correct way.sndgpr26sir
can u please write the whole program
Well, you gonna do the same with command line arguments i.e. convert a string into a integer. Its surely a possible option.Vishal0203wrong info:
you cannot do it by fgets()
@vishal-pysGmK • Aug 30, 2012
you gonna do the same with command line argumentsCan you give a small example?
@vishal-pysGmK • Aug 31, 2012
what conversion you're talking about?? Will you lease elaborate and educate me about it??[Prototype]You got the info, give it a try yourselves. We're here to help you learn & what you're asking is not the correct way.
Well, you gonna do the same with command line arguments i.e. convert a string into a integer. Its surely a possible option.
#include "stdio.h"
#include "conio.h"
int main()
{
char n[1]; int a,b;
fflush(stdin);
fgets(n,sizeof(n),stdin);
b = int(n);
printf("%d",b);
//a=2*n;
//fprintf(stdout,"%d",a);
getch();
return 0;
}
Is this you're talking about?? But doesn't give a desired output!! 😖
@prototype-G9Gn5k • Aug 31, 2012
#include<stdio.h>
#include<stdlib.h>
int main()
{
char n[20];
int z;
fgets(n, sizeof(n),stdin);
z = atoi((char*)n);
printf("String converted to integer is -> %d\n",z);
printf("Adding 10 to the converted string -> %d\n",z+10);
return 0;
}
@vishal-pysGmK • Aug 31, 2012
z = atoi((char*)n);Can you tell me what this part actually does?? ? that was cool!!
@prototype-G9Gn5k • Aug 31, 2012
That's actually the heart of the system atoi (ASCII to INTEGER) is the function which converts the string into integer. However, a major drawback attached to it is that it doesn't report error in case you pass something like "asdads" as input instead of numbers in form of string. You can use strtol() instead of atoi(), but I've just used it to keep the things simple.Vishal0203Can you tell me what this part actually does?? ? that was cool!!
@vishal-pysGmK • Aug 31, 2012
doesn't report error in case you pass something like "asdads" as input instead of numbers in form of string.I think we can make a check for number or string using conditional statements before passing it to atoi(), isn't it??
@prototype-G9Gn5k • Aug 31, 2012
How so? Everything that will come as an input will be a string i.e. despite you're sending input as 123456, its will be treated as a string. To make the string distinguishable as an integer, we're using that function.Vishal0203I think we can make a check for number or string using conditional statements before passing it to atoi(), isn't it??
@vishal-pysGmK • Aug 31, 2012
@sulochana-anand-OrGmKr • Aug 31, 2012
y r u asking?if u used this code then definitely u must run it.wat was the result?Vishal0203Note:: I'm not using scanf() but I'm using fscanf().. is that okay??
#include "stdio.h" #include "conio.h" int main() { int n,a; fscanf(stdin,"%d",&n); a=2*n; fprintf(stdout,"%d",a); getch(); return 0; }
@vishal-pysGmK • Aug 31, 2012
result was fine..sulochana anandy r u asking?if u used this code then definitely u must run it.wat was the result?
@rahul69-97fAOs • Aug 31, 2012
#include<stdio.h>
#include<conio.h>
main()
{
int no,i;
char s[40];
gets(s);
no=atoi(&s);
printf("%d",no);
getch();
return 0;
}simply gets() can do...😎
@sulochana-anand-OrGmKr • Aug 31, 2012
thats right.but u are using fscanf "stdin" but scanf need not to use stdin.The fscanf() function read from the named input stream. The scanf() function reads from the standard input stream .Vishal0203result was fine..
I'm getting the desired result.
but I'm using fscanf() which belongs to family of scanf(). That's the reason I asked
@vishal-pysGmK • Sep 1, 2012
gets()gets() is not a good suggestion as it overloads the buffer. Hence,
@vishal-pysGmK • Sep 1, 2012
you're right but, the ques is about the function and as far as i know, scanf() fscanf() both belong to same family.sulochana anandthats right.but u are using fscanf "stdin" but scanf need not to use stdin.The fscanf() function read from the named input stream. The scanf() function reads from the standard input stream .
@priya-e8RF2B • Sep 1, 2012
@prototype-G9Gn5k • Sep 1, 2012
Those are C++ functions. This discussion is about C.PriyaJHow about cin(console input)? Its simple.
Program-
#include<iostream.h>
int main()
{
int num;
cin>>num;
cout<<num*2;
return 0;
}
@priya-e8RF2B • Sep 1, 2012