c++结构体嵌套输入异常

Question

如题：
要实现一个线性表的结构，但是在一开始初始化赋值时出现了问题。

```# include

include

include

using namespace std;
#define INIT_SIZE 1000
#define INCREMENT 1000

typedef struct {
string num;
string name;
float score;
}student , *student_l;
typedef struct {
student_l Student_List;
int length;
int listsize;
}List;

int Initial_List(List &L, int n =0 ) //初始化表格，分配空间
{
L.Student_List = (student_l)malloc(INIT_SIZE * sizeof(student));
if (!L.Student_List) return -1;
string student_name;
string student_num;
float student_score = 0;
/*for (int i = 0; i < n; i++)
{
cin >> student_num >> student_name >> student_score;

    L.Student_List[i].name = student_name;
    L.Student_List[i].num = student_num;
    L.Student_List[i].score = student_score;
}*/
L.length = n;
L.listsize = INIT_SIZE;
return 0;

}

int main()
{
int student_number = 0;
List student_List;
cin >> student_number;
Initial_List(student_List, student_number);

return 0;
system("pause");

}

Answer 1

我帮你运行了下，INIT_SIZE值设置小一点就可以正常运行，可以的话，请采纳一下

#include<iostream>
#include <stdlib.h>
using namespace std;
#define INIT_SIZE 100
#define INCREMENT 1000

typedef struct {
string num;
string name;
float score;
}student , *student_l;
typedef struct {
student_l Student_List;
int length;
int listsize;
}List;

int Initial_List(List &L, int n =0 ) //初始化表格，分配空间
{
    //L.Student_List = (student_l)malloc(INIT_SIZE * sizeof(student));
    //L.Student_List = new student[INIT_SIZE];
    L.Student_List = (student_l)malloc(INIT_SIZE * sizeof(student));
    if (!L.Student_List) return -1;
    string student_name;
    string student_num;
    float student_score = 0;
    for (int i = 0; i < n; i++)
    {
        cin >> student_num >> student_name >> student_score;
        L.Student_List[i].name = student_name;
        L.Student_List[i].num = student_num;
        L.Student_List[i].score = student_score;
    }
    L.length = n;
    L.listsize = INIT_SIZE;
    return 0;
}
int main()
{
int student_number = 0;
List student_List;
cin >> student_number;
Initial_List(student_List, student_number);
return 0;
}