读到strcpy开始之后就一直闪回报错

Question

调试的时候，读到strcpy开始之后就一直闪回报错，不知道是因为什么？

```c
#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) * 2);
    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* prev, * p;
    prev = (student*)malloc(sizeof(student));
    head = prev;
    for (int i = 0; i < 10; i++)
    {
        p = (student*)malloc(sizeof(student));
        strcpy_s(p->Firstname, addStudent[i].Firstname);
        strcpy_s(p->Lastname, addStudent[i].Lastname);
        strcpy_s(p->SSN, addStudent[i].SSN);
        p->number = addStudent[i].number;
        for (int j = 0; j < p->number; j++)
        {
            strcpy_s(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

不知道你这个问题是否已经解决, 如果还没有解决的话:

• 你可以看下这个问题的回答https://ask.csdn.net/questions/210318
• 除此之外, 这篇博客: strcpy函数复制字符串中的 strcpy函数是复制字符串的，拥有两个参数，一个是被复制字符串，另一个是新字符串。 部分也许能够解决你的问题, 你可以仔细阅读以下内容或者直接跳转源博客中阅读:
  

  #include <stdio.h>
  #include <string.h> 	
  void myStrNCpy(char *des, char *src, int len) {
    int i;
    for (i = 0; i < len && src[i] != '\0'; i++) {
   	    des[i] = src[i];}
   	    for (i = 0; i < len; i++)  ;
   	    des[i] = '\0';
   	    printf("des:%s\n",des);
   	}
   	int main() {
   	    char des[10];
   	    char src[10];
   	    printf("input src\n");
   	    scanf("%s", src);
   	    int len;
   	    len = strlen(src);
   	    myStrNCpy(des, src, len);
   	    return 0;
   	}
  

如果你已经解决了该问题, 非常希望你能够分享一下解决方案, 写成博客, 将相关链接放在评论区, 以帮助更多的人 ^-^