C语言实例57：rewind用法

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char *argv[])
{
    char str[80];
    FILE *fp;

    if((fp = fopen("test.txt","w")) == NULL)
    {
        printf("Cannot open file.\n");
        exit(0);
    }


    do
    {
        printf("Please enter a string:\n");
        gets(str);
        strcat(str, "\n");
        fputs(str, fp);

    }
    while (*str != '\n');

    rewind(fp);

    while(!feof(fp))
    {
        fgets(str, 79, fp);
        printf(str);
    }
    fclose(fp);

    system("pause");
    return 0;
}