Re: [Dev-C++] SYSTEM() don't work in Dev-c++ ??

[Luigi S. <gi...@li...>]

First: when you need the function "system" you should include <stdlib.h>. 
then the prototype of "system" says:

int system(const char *s);

this means that you are allowed to pass only one string to "system", in 
other words: "system" resembles "puts" and not "printf".

Try the following:

---
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_BUF 50 /* "echo " and var will surely fit in it */
int main()
{
    char var[15];
    char buf[MAX_BUF];


    printf("\nType the environment that u want see the value: ");
    scanf("%s",&var);
    strcpy(buf, "echo ");
    strcat(buf, var);

    system(buf);

  return(0);
}


At 14.21 17/07/01 -0300, you wrote:
>Hi,
>
>I'm trying to use the system() function in dev-c++ ... but it don't work
>....
>
>I was trying of this mode:
>
>#include <stdio.h>
>#include <conio.h>
>
>int main()
>{
>  char var[15];
>
>  printf("\nType the environment that u want see the value: ");
>  scanf("%s",&var);
>
>  system("echo %s",var);
>
>  return(0);
>}
>
>Then when i try compile this program i get the error:
>
>16 f:\dev-c_~1\untitl~1.cpp
>  implicit declaration of function `int system(...)'
>
>
>Why ?? The system() is a function of stdio.h ?? why it don't work ... please
>show me the correct mode ... if i'm making something wrong ...
>
>thkz
>
>Cheers
>
>[ ]'s
>
>
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>Dev-cpp-users mailing list
>Dev...@li...
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---
gisan