[c]代码库
#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;
}