h0519.c

141个C语言经典小程序

#include <stdio.h>

struct mystruct
{
  int i;
  char ch;
};

int main(void)
{
   FILE *stream;
   struct mystruct s;

   if ((stream = fopen("TEST.$$$", "wb")) == NULL) /* open file TEST.$$$ */
   {
      fprintf(stderr, "Cannot open output file.\n");
      return 1;
   }
   s.i = 0;
   s.ch = 'A';
   fwrite(&s, sizeof(s), 1, stream); /* write struct s to file */
   fclose(stream); /* close file */
   return 0;
}