有关数组和结构体的代码，看不出来哪里有问题，vs可以运行但会中断

问题遇到的现象和发生背景

运行中断但并没有报错

问题相关代码，请勿粘贴截图

#include<iostream>
using namespace std;
struct Student
{
    int Sname;
    int score;
};
struct Teacher 
{
    string Tname;
    struct Student stu[5];
};
void allocatespace1(struct Teacher tArray[])
{
    string nameseed = "ABCDE";
    for (int i = 0; i < 3; i++)
    {
        tArray[i].Tname = "Teacher_";
        tArray[i].Tname += nameseed[i];
        for (int j = 1; j < 6; j++)
        {
            tArray[i].stu[j].Sname =j;
            tArray[i].stu[j].score = rand() % 100 + 1;
        }
    }
}
int main()
{

    struct Teacher tArray[3];
    allocatespace1(tArray);
    for (int k = 0; k < 3; k++)
    {
        cout << "teacher name:" << tArray[k].Tname << endl;
        for (int m = 1; m < 6; m++)
        {
            cout << "student name:" << tArray[k].stu[m].Sname << endl;
            cout << "student score:" << tArray[k].stu[m].score << endl;
        }
    }
    system("pause");
    return 0;
}

运行结果及报错内容

我的解答思路和尝试过的方法

我想要达到的结果

让每个教师的第五名学生的成绩为正常范围

问题见注释处，供参考：

#include<windows.h> 
#include<iostream>
using namespace std;
struct Student
{
    int Sname;
    int score;
};
struct Teacher
{
    string Tname;
    struct Student stu[5];     //这里定义了 5 个学生的数组，下标 0 - 4 
};
void allocatespace1(struct Teacher tArray[])
{
    string nameseed = "ABCDE";
    for (int i = 0; i < 3; i++)
    {
        tArray[i].Tname = "Teacher_";
        tArray[i].Tname += nameseed[i];
        for (int j = 0; j < 5; j++) //for (int j = 1; j < 6; j++) 这里循环下标1 - 5，下标 5 越界
        {
            tArray[i].stu[j].Sname = j;
            tArray[i].stu[j].score = rand() % 100 + 1;
        }
    }
}
int main()
{

    struct Teacher tArray[3];
    allocatespace1(tArray);
    for (int k = 0; k < 3; k++)
    {
        cout << "teacher name:" << tArray[k].Tname << endl;
        for (int m = 0; m < 5; m++)    //for (int m = 1; m < 6; m++) 这里循环下标1 - 5，下标 5 越界
        {
            cout << "student name:" << tArray[k].stu[m].Sname << endl;
            cout << "student score:" << tArray[k].stu[m].score << endl;
        }
    }
    system("pause");
    return 0;
}