fread和fwrite對結構體數組從檔案讀入或寫入

標籤：

從鍵盤輸入4個學生資料，把他們轉存到磁碟檔案中去
重點內容

#define _CRT_SECURE_NO_WARNINGS#include <stdio.h>#define SIZE 2struct student_type{    char name[10];    int num;    int age;    char addr[15];}stud[SIZE];main(){    void display();    void save();    printf("%s\n","liuwei");    int i;    for (i = 0; i<SIZE; i++)        scanf("%s%d%d%s", stud[i].name, &stud[i].num,        &stud[i].age, stud[i].addr);    save();    display();}void save(){    FILE *fp;    int  i;    if ((fp = fopen("d:\\stu_dat.data", "wb")) == NULL)    {        printf("cannot open file\n");        return;    }    for (i = 0; i<SIZE; i++)    if (fwrite(&stud[i], sizeof(struct student_type), 1, fp) != 1)        printf("file write error\n");    fclose(fp);}void display(){    FILE *fp;    int  i;    if ((fp = fopen("d:\\stu_dat.data", "rb")) == NULL)    {        printf("cannot open file\n");        return;    }    for (i = 0; i<SIZE; i++)    {        fread(&stud[i], sizeof(struct student_type), 1, fp);        printf("%s",stud[i].name);        printf("%-10s %4d %4d %-15s\n", stud[i].name,            stud[i].num, stud[i].age, stud[i].addr);    }    fclose(fp);}----------

fread和fwrite對結構體數組從檔案讀入或寫入