Getting_Around

#define _POSIX_C_SOURCE 200809L
#include <stdio.h>

int main(void)
{
   printf("A regular message on stdout\n");

   /* Using streams with fprintf() */
   fprintf(stdout, "Also a regular message on "
      "stdout\n");
   fprintf(stderr, "An error message on stderr\n");

   /* Using file descriptors with dprintf().
    * This requires _POSIX_C_SOURCE 200809L
    * (man 3 dprintf)*/
   dprintf(1, "A regular message, printed to "
      "fd 1\n");
   dprintf(2, "An error message, printed to "
      "fd 2\n");
   return 0;
}

From: https://github.com/PacktPublishing/Linux-System-Programming-Techniques