Thread: if not exist, failed

Or see this example.

Code:

/** opnclose.c */
#include <stdio.h>        /*  printf, fopen, fclose  */
#include <stdlib.h>       /*  exit                   */

#define READ "r"

int main(int argc, char *argv[])
 {
  FILE *fz;

  if (argc != 2)                              
   {
    printf("\n\nSyntax: opnclose datei[.ext]");
    exit(0);
   }

  if ((fz = fopen(argv[1], READ)) == NULL)     
   printf("\n\nFailure:could not open file %s\n", argv[1]);
  else
   {
    fclose(fz);                               
    printf("\n\nFile %s closed.", argv[1]);
   }
 return 0; 
}