C++实现矩阵元素交换输出

```cpp #include <iostream> using namespace std; int main() { int n, m; cin >> n >> m; int matrix[10][10]; // 读取矩阵元素 for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { cin >> matrix[i][j]; } } // 交换每行元素 for (int i = 0; i < n; i++) { for (int j = 0; j < m / 2; j++) { int temp = matrix[i][j]; matrix[i][j] = matrix[i][m - j - 1]; matrix[i][m - j - 1] = 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 | 299点数解答 | 2026-05-09 19:31:14]