C语言库abort()函数

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

int main () {
   FILE *fp;

   printf(Going to open nofile.txt\n);
   fp = fopen( nofile.txt,r );
   if(fp == NULL) {
      printf(Going to abort the program\n);
      abort();
   }

   printf(Going to close nofile.txt\n);
   fclose(fp);

   return(0);
}