将一个给定的n*n的数字方阵转置，即行列互换C++代码

以下是将一个给定的n*n的数字方阵转置，即行列互换的C++代码：

#include <iostream>
using namespace std;

int main() {
    int n;
    cout << "请输入方阵阶数n：";
    cin >> n;
    int matrix[n][n];
    cout << "请输入" << n*n << "个数字，每个数字用空格分隔：" << endl;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cin >> matrix[i][j];
        }
    }
    cout << "原矩阵为：" << endl;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cout << matrix[i][j] << " ";
        }
        cout << endl;
    }
    // 转置矩阵
    for (int i = 0; i < n; i++) {
        for (int j = i + 1; j < n; j++) {
            int temp = matrix[i][j];
            matrix[i][j] = matrix[j][i];
            matrix[j][i] = temp;
        }
    }
    cout << "转置矩阵为：" << endl;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cout << matrix[i][j] << " ";
        }
        cout << endl;
    }
    return 0;
}

该程序使用二维数组存储方阵，通过嵌套循环遍历矩阵元素实现转置操作。