用C++计算数字矩阵每列元素之和

```cpp #include <iostream> using namespace std; int main() { int n, m; cin >> n >> m; int matrix[5][5]; int columnSum[5] = {0}; // 输入矩阵元素 for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { cin >> matrix[i][j]; columnSum[j] += matrix[i][j]; } } // 输出每列的和 for (int j = 0; j < m; j++) { if (j > 0) { cout << " "; } cout << columnSum[j]; } cout << endl; return 0; } ``` ######[AI问答 | 210点数解答 | 2026-04-25 19:42:29]