h0513.c

141个C语言经典小程序

#include <string.h>
#include <stdio.h>
#include <conio.h>

int main(void)
{
   FILE *stream;
   char string[] = "This is a test";
   char ch;

   /* open a file for update */
   stream = fopen("DUMMY.FIL", "w+");

   /* write a string into the file */
   fwrite(string, strlen(string), 1, stream);

   /* seek to the beginning of the file */
   fseek(stream, 0, SEEK_SET);

   do
   {
      /* read a char from the file */
      ch = fgetc(stream);

      /* display the character */
      putch(ch);
   } while (ch != EOF);

   fclose(stream);
   return 0;
}