C++调试出现奇怪错误？

求逆矩阵
调试出现下面这种提示然后屏幕出现很多奇怪的代码，不知道咋办了，希望各路UU康康，蟹蟹！
'0x007138A9 处有未经处理的异常(在 解方程.EXE 中): 0xC00000FD: Stack overflow (参数: 0x00000000, 0x00E02000)"
如下

#include <cmath>
#include <iomanip>
using namespace std;
//函数声明
int determinant(int A) { return 0; }

int main()
{
    int n;
    float a = 0.0;
    cout << "输入方阵的阶" << endl;
    cin >> n;
    float A[256][256];
    float b[256][256];
    float A_1[256][256];
    int  I[256][256];
//输入方阵
    cout << "按行输入方阵元素" << endl;
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
            cin >> A[i][j];
    }
//计算行列式
    a = determinant(A[256][256]);
//计算转置
    for (int i = 0; i < n; i++) 
    {
        for (int j = 0; j < n; j++)
            b[i][j] = A[j][i];
    }
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
            A_1[i][j] = b[i][j] / a;
    }
//输出A的逆矩阵
    cout << "A的逆矩阵为：" << endl;
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
            cout<<A_1[i][j];
        cout << "\n";
    }
//检验
    cout << "AA_1=\n";
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            I[i][j] =(int)A[i][j]*A_1[i][j];
        }
    }
//输出A与A_1的乘积
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
            cout << I[i][j];
        cout << "\n";
    }
    return 0;
}

Stack overflow 堆栈溢出了，可以使用动态数组。

#include <cmath>
#include <iomanip>
#include <iostream>
using namespace std;
//函数声明
int determinant(int A) { return 0; }

template <typename T>
void init(T **a, int n)//生成二维数组
{
    for (int i = 0; i < n; i++)
    {
        a[i] = new T[n];
    }
}
int main()
{
    int n;
    float a = 0.0;
    cout << "输入方阵的阶" << endl;
    cin >> n;
    float **A = new float *[n]; //A[256][256];
    init(A, n);
    float **b = new float *[n]; //b[256][256];
    init(b, n);
    float **A_1 = new float *[n]; //A_1[256][256];
    init(A_1, n);
    int **I = new int *[n]; //I[256][256];
    init(I, n);
    //输入方阵
    cout << "按行输入方阵元素" << endl;
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
            cin >> A[i][j];
    }
    //计算行列式
    a = 1; //a = determinant(A[256][256]); 函数返回0，a在后面当做除数导致数据错误。
    //计算转置
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
            b[i][j] = A[j][i];
    }
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
            A_1[i][j] = b[i][j] / a;
    }
    //输出A的逆矩阵
    cout << "A的逆矩阵为：" << endl;
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
            cout << A_1[i][j] << " ";
        cout << endl;
    }
    //检验
    cout << "AA_1=" << endl;
    ;
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            I[i][j] = (int)(A[i][j] * A_1[i][j]); //I[i][j] = (int)A[i][j] * A_1[i][j];
        }
    }
    //输出A与A_1的乘积
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
            cout << I[i][j] << " ";
        cout << endl;
    }

    return 0;
}

看看是不是数组越界了