读取文件时程序报错，调试了好久不知道如何解决
程序代码：#ifndef STUDENT_SYSTEM_H
#define STUDENT_SYSTEM_H
void Studentmassage_ShowMenu();
void AddItem();
void Display();
void Sort();
void Find();
void RemoveItem();
void t();
void ModifyItem();
struct Student
{
char name[20];
char Id[20];
char sex[4];
int age;
int Cnum;
int Mnum;
int Enum;
int math;
int sum;
int average;
};
typedef struct load
{
char user_name[50];
char password[50];
}mima;
void build_new();
int load_user();
int load_mima();
void write_file(struct Student *s);
void read_file(void);
#endif程序代码：#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "student_system.h"
void write_file(struct Student *s)
{
FILE *fp_1;
int mark=1;
if((fp_1=fopen("list_student.txt","ab+"))==NULL)
printf("打开文件失败");
else
while(s->name[0]!=NULL)
{
fwrite(&mark,sizeof(int),1,fp_1);
fwrite(s,sizeof(Student),1,fp_1);
printf("存储数据成功");
system("pause");
s++;
}
fclose(fp_1);
}
void read_file()
{
FILE *fp_2;
int mark;
struct Student *s;
s=(Student *)malloc(sizeof Student);
if((fp_2=fopen("list_student.txt","rb"))==NULL)
printf("打开文件失败");
else
while(fread(&mark,sizeof(int),1,fp_2)==1)
{
fflush(stdout);
fread(s,sizeof(Student),1,fp_2);
printf("读取数据成功\n");
printf("%6s%6s%6s%6s%6s%6s%6s%6s%6s%6s\n","姓名","学号","性别","年龄","成绩1","成绩2","成绩3","成绩4","总成绩","平均成绩");
printf("%6s%6s%6s%6d%6d%6d%6d%6d%6d%6d\n",s->name,s->Id,s->sex,s->age,s->Cnum,s->Enum,s->Mnum,s->math,s->sum,s->average);
s++;
}
/*system("pause");*/
free(s);
fclose(fp_2);
}
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