结构体输入到文档中发生错误怎么办(语言-c++)

Question

int main()

struct student
{
    int num;
    char name[50];
    float maths;
    float english;
    float cxsj;
    float chxgl;
    float dqxtkx;
    float average;
};

printf("提示：学生总数不得超过1000。\n");
int N;
printf("学生总数为：");
scanf_s("%d", &N);
printf("\n\n");

struct student stu[1000]{};

printf("读入学生成绩：\n\n");

const char* path1 = "C:\\Users\\qjy\\Desktop\\上课\\程序设计\\作业\\作业实体\\大作业\\学生成绩文档.txt";
FILE* p1 = NULL;
int a1 = fopen_s(&p1, path1, "wb+");

student blank1 = { 0," ",0,0,0,0,0,0 };
fwrite(&blank1, sizeof(stu), N, p1);

fclose(p1);

printf("\n以下是已读入的学生成绩：\n\n");

FILE* p11 = NULL;
int a11 = fopen_s(&p11, path1, "rb");

while (feof(p11) == 0)
{
    student stu1;
    fread(&stu1, sizeof(struct student), 1, p11);
    printf("%d %s %f %f %f %f %f %f\n", stu1.num, stu1.name, stu1.maths, stu1.english, stu1.dqxtkx, stu1.cxsj, stu1.chxgl, stu1.average);
}

fclose(p11);

return 1;

}

为什么读出来不是四个｛0， ，0等等｝而是乱码呢？应该怎样修改？

Answer 1

修改如下，供参考：

#include <stdio.h>
#include <stdlib.h>
struct student
{
    int   num;
    char  name[50];
    float maths;
    float english;
    float cxsj;
    float chxgl;
    float dqxtkx;
    float average;
};
int main()
{
    printf("提示：学生总数不得超过1000。\n");
    int N;
    printf("学生总数为：");
    scanf_s("%d", &N);
    printf("\n\n");

    struct student stu[1000]{};

    printf("读入学生成绩：\n\n");

    const char* path1 = "C:\\Users\\qjy\\Desktop\\上课\\程序设计\\作业\\作业实体\\大作业\\学生成绩文档.txt";
    FILE* p1 = NULL;
    int a1 = fopen_s(&p1, path1, "wb+");

    struct student blank1 = { 0,"\0",0,0,0,0,0,0 };
    if (a1)  return 1;   // 修改 判断文件读取是否成功，不成功即跳出运行
    fwrite(&blank1, sizeof(struct student), N, p1); // 修改
    //fwrite(&blank1, sizeof(stu), N, p1);
    fclose(p1);

    printf("\n以下是已读入的学生成绩：\n\n");

    FILE* p11 = NULL;
    int a11 = fopen_s(&p11, path1, "rb");
    if (a11) return 1;//修改
    while (feof(p11) == 0)
    {
        student stu1;
        fread(&stu1, sizeof(struct student), 1, p11);
        printf("%d %s %f %f %f %f %f %f\n", stu1.num, stu1.name, stu1.maths, stu1.english, stu1.dqxtkx, stu1.cxsj, stu1.chxgl, stu1.average);
    }
    fclose(p11);
    return 0;
}