errno example

// just another example by Cooler_
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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

  errno = 0;
  stream = fopen (name, "rx");
  if (stream == NULL)
  {
      fprintf (stderr, " File:%s \n %s\n", name, strerror (errno));
      exit (1);
  }
  else
    return stream;
}

int main()
{

 FILE *startrek=open_sesame("mano_jones_.txt");

// ... etc


 exit(0);
}