Problem Concerning C Lang

sam_from_hell · 2010-09-25T23:02:14+00:00

Hello s I started learning C programming a month or two ago. I tried to use the clrscr(); fuction in the program i have included conio.n and stdio.h , but the compiler i use throws up "Undefined reference to clrscr()" error while compiling. Anyone know why? I googled ( as i usually do when i meet with a problem) but nothing.. I am using the latest version of Code::Blocks - Thanks Sam 😁

Problem Concerning C Lang

sam_from_hell

Member

Updated: Oct 22, 2024

Views: 1.1K

Hello s
I started learning C programming a month or two ago.
I tried to use the clrscr(); fuction in the program
i have included conio.n and stdio.h , but the compiler i use throws up "Undefined reference to clrscr()" error while compiling. Anyone know why? I googled ( as i usually do when i meet with a problem) but nothing..
I am using the latest version of Code::Blocks
- Thanks Sam 😁

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Manish Goyal

Member • Sep 25, 2010

it is conio.h not conio.n

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sam_from_hell

Member • Sep 25, 2010

sorry typo
*i included conio.h 😁

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Manish Goyal

Member • Sep 25, 2010

can you post your program and which compiler are you using?

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sam_from_hell

Member • Sep 25, 2010

This is a small program i learnt to compare two strings using strcmp()..
I use CodeBlocks, and the GNU GCC compiler.

#include<stdio.h>
#include<conio.h>
#include<string.h>
int main (void)
{
     char password[11]= {"qwerty"};
     char inputpassword[11]= "";
     char newpassword[11]="";
     char response[2]="";
     char responsey[2]="Y";
     char responsen[2]="N";
     int i=0;
     while (i<10)
     {
         printf("Enter Password :\n");
         gets(inputpassword);
         if (strcmp(password,inputpassword)==0)
            {
               printf("Do u want to change password?[Y/N]:\n");
               scanf("%s",response);
               if (strcmpi(responsey,response)==0)
                  {
                      printf("Enter new password:\n");
                      scanf("%s", password);
                      printf("The new password is: %s\n", password);
                  }
               else
                  {
                      printf("Welcome:\n");
                  }
            }
         else
             {
               //clrscr();
               printf("Invalid Password\n");
             }
         i++;
     }
     getch();
}

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anandkumarjha

Member • Sep 25, 2010

#include<stdio.h>
#include<conio.h>
#include<string.h>
int main (void)
{
char password[11]= {"qwerty"};
char inputpassword[11]= "";
char newpassword[11]="";
char response[2]="";
char responsey[2]="Y";
char responsen[2]="N";
int i=0;
while (i<10)
{
printf("Enter Password :\n");
gets(inputpassword);
if (strcmp(password,inputpassword)==0)
{
printf("Do u want to change password?[Y/N]:\n");
scanf("%s",response);
if (strcmp(responsey,response)==0)
{
printf("Enter new password:\n");
scanf("%s", password);
printf("The new password is: %s\n", password);
}
else
{
printf("Welcome:\n");
}
}
else
{
//clrscr();
printf("Invalid Password\n");
}
i++;
}
getch();
}
Try this code

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Manish Goyal

Member • Sep 25, 2010

if you using gnu gcc compiler then conio.h will not work

and also you have to include file as

include<stdio>

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sam_from_hell

Member • Sep 25, 2010

goyal420
if you using gnu gcc compiler then conio.h will not work

and also you have to include file as

include<stdio>
ok thanks, i will check it out 😁

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sam_from_hell

Member • Sep 27, 2010
goyal420
if you using gnu gcc compiler then conio.h will not work

and also you have to include file as

include<stdio>
GNU GCC does support conio.h..
the solution for the problem i originally posted is to use a user defined function that can be found here instead of clrscr(); ( u can create a header file from the code given in the end of the link)
```
https://faq.cprogramming.com/cgi-bin/smartfaq.cgi?answer=1031963460&id=1043284385
```
(found this after asking 3 people lol 😁 )
also you cant use "include <stdio>" for some reason(maybe because i'm using c and not c++)
it HAS to be #inlcude<stdio.h>
--Thanks Sam 😁
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