h0514.c

141个C语言经典小程序

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

int main(void)
{
   FILE *stream;
   char string[] = "This is a test";
   char msg[20];

   /* 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 start of the file */
   fseek(stream, 0, SEEK_SET);

   /* read a string from the file */
   fgets(msg, strlen(string)+1, stream);

   /* display the string */
   printf("%s", msg);

   fclose(stream);
   return 0;
}