Programming and posix getting started

7
A CGI program - 1
Edit the source file:
> cp hw.c hwcgi.c
> vi hwcgi.c
#define _POSIX_SOURCE
#include <stdio.h>
main()
{
printf("Content-type: text/plain\n\n");
printf("hello world\n");
}
Compile and link the program:
> c89 -o hwcgi hwcgi.c