字符串填入链表之后报错是为什么？

Question

之前用数组的数据填进链表都没有问题，为什么这次的字符串会不适用呢？

#include<stdio.h>
#include<malloc.h>
#include<string.h>
#include"student.h"
typedef struct course
{
    char name[5];
    int ID;
    int section;
}course;
typedef struct student
{
    char Firstname[100];
    char Lastname[100];
    char SSN[15];
    int number;//number of course attending
    course Arraycourse[10];
    struct student* next;
}student;
void ReadInputFile(char* filename, student* stu)
{
    FILE* fp;
    fopen_s(&fp, filename, "rt");
    if (!fp)
    {
        printf("open file error");
    }
    stu = (student*)malloc(sizeof(student) * 10);
    for (int i = 0; i < 2; i++)
    {
        fscanf_s(fp, "%s%s%s%d", stu[i].Firstname, sizeof(stu[i].Firstname),
            stu[i].Lastname, sizeof(stu[i].Lastname),
            stu[i].SSN, sizeof(stu[i].SSN),
            &stu[i].number);
        printf("%s\n%s\n%s\n%d\n", stu[i].Firstname,
            stu[i].Lastname,
            stu[i].SSN,
            stu[i].number);
        for (int j = 0; j < stu[i].number; j++)
        {
            fscanf_s(fp, "%s%d%d", stu[i].Arraycourse[j].name, sizeof(stu[i].Arraycourse[j].name),
                &stu[i].Arraycourse[j].ID, &stu[i].Arraycourse[j].section);
            printf("%s %d %d\n", stu[i].Arraycourse[j].name,
                stu[i].Arraycourse[j].ID, stu[i].Arraycourse[j].section);
        }
    }
    fclose(fp);
}
void AddToList(student* addStudent, student* head)
{
    student* prev, * p;
    prev = (student*)malloc(sizeof(student));
    head = prev;
    for (int i = 0; i < 10; i++)
    {
        p = (student*)malloc(sizeof(student));
        p->Firstname = addStudent[i].Firstname;
        p->Lastname = addStudent[i].Lastname;
        p->SSN = addStudent[i].SSN;
        p->number = addStudent[i].number;
        for (int j = 0; j < p->number; j++)
        {
            p->Arraycourse[j].name = addStudent[i].Arraycourse[j].name;
            p->Arraycourse[j].ID = addStudent[i].Arraycourse[j].ID;
            p->Arraycourse[j].section = addStudent[i].Arraycourse[j].section;
        }
        p->next = NULL;
        prev->next = p;
        prev = p;
    }
}

Answer 1

参考GPT和自己的思路：在代码中，字符串类型的变量是使用字符数组来定义的，所以不能直接使用赋值运算符将一个字符串赋值给另一个字符串变量。在AddToList函数中，你应该使用strcpy函数来将字符串复制到链表节点中，而不是直接使用赋值运算符。例如：p->Firstname = addStudent[i].Firstname 应该改为 strcpy(p->Firstname, addStudent[i].Firstname)。同样，需要对所有的字符串类型的变量都进行这个更改。