handle_failure.c

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

FILE *
open_sesame (char *name)
{
     FILE *stream;

     errno = 0;
     stream = fopen (name, "r");
     if (stream == NULL)
     {
         fprint (stderr, "%s: Couldn't open file %s; %s\n",
                 program_invocation_short_name, name, strerror (errno));
         exit (EXIT_FAILURE);
     }
     else
         return stream;
}