c - fwrite后在txt文件上显示汉字

Question

我想将结构中的数据写入文本文件。但是最终在文本文件中显示奇怪的字符。我已经更改了许多形式的fwrite参数，但没有任何效果。请有人帮我。对不起，长代码

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

struct Student
{
    char name[30];
    int id;
    int score;
    int score2;
    int score3;
};

int main()
{
    printf("Please input the information below into grade.data!\n");
    printf("Ends with name's value equal to 'E'\n");
    struct Student stu[10];
    int i = 0, maxlength = 0; //size of longest name
    printf("Name No Math Chi Eng\n");
    while (true){
        scanf("%s", stu[i].name);
        if(maxlength < strlen(stu[i].name)) maxlength = strlen(stu[i].name);
        if (stu[i].name[0] == 'E') break;
        scanf("%d", &stu[i].id);
        scanf("%d", &stu[i].score1);
        scanf("%d", &stu[i].score2);
        scanf("%d", &stu[i].score3);
        i++;
    }

    FILE* fp;
    fp = fopen("test.txt", "wb");
    if (fp == NULL) {
        printf("Open file error!");
        exit(-1);
    }

    fwrite(&stu, sizeof(struct Student), 1, fp);
    fclose(fp);
    printf("Name%-*c No%-*c Math Chi Eng\n", maxlength-4, ' ', 7, ' ');
    for (int i = 0; stu[i].name[0] != 'E'; i++) {
        printf("%-*s ", maxlength, stu[i].name);
        printf("%-*d ", 9, stu[i].id);
        printf("%-*d ", 4, stu[i].score1);
        printf("%-*d ", 3, stu[i].score2);
        printf("%d\n", stu[i].score3);
    }
    return 0;
}

Answer 1

这是因为Student之外的name结构中的成员是整数。将整数值转换为ASCII，然后将其存储在文件中。