feof_example.c

来自「linux下的程序开发（C语言实现）：本程序主要实现文件的操作」· C语言 代码 · 共 33 行

#include<stdio.h>
int main(int argc,char *argv[])
{
    struct student
    {
        char name[10];
        int number;
    };
    FILE *fp=NULL;
    int i;
    int rc;
struct student student[100],*qq;
    if((fp=fopen("aa.txt","r+"))==NULL)
    {
        printf("can not open file!\n");
        return -1;
    }
    rc=fread(student,sizeof(struct student),100,fp);
    printf("rc=%d\n",rc);
    if(rc!=100) //判断是否读了100个字节
    {
if(feof(fp))//判断是否读到文件尾
            printf("read end of file!\n");
        else
            printf("read file error!\n");
    }
    qq=student;
    for(i=0;i<rc;i++,qq++)
        printf("%s\t\t %d\n",qq->name,qq->number);
    fclose(fp);
    return 0;
}