C++实现矩阵指定行交换的程序

```cpp #include <iostream> using namespace std; const int MAX_SIZE = 5; int main() { int n, m; cin >> n >> m; int matrix[MAX_SIZE][MAX_SIZE]; // 输入矩阵元素 for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { cin >> matrix[i][j]; } } int x, y; cin >> x >> y; // 交换第x行和第y行 for (int j = 0; j < m; j++) { int temp = matrix[x - 1][j]; matrix[x - 1][j] = matrix[y - 1][j]; matrix[y - 1][j] = temp; } // 输出交换后的矩阵 for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { cout << matrix[i][j]; if (j < m - 1) { cout << " "; } } cout << endl; } return 0; } ``` ######[AI问答 | 308点数解答 | 2026-05-30 21:01:12]