C++实现武器放置到矩阵主对角线的程序

```cpp #include <iostream> using namespace std; int main() { int n; cin >> n; // 定义并初始化矩阵 int matrix[5][5] = {0}; // 填充主对角线元素 for (int i = 0; i < n; i++) { matrix[i][i] = i + 1; } // 输出矩阵 for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { cout << matrix[i][j]; if (j < n - 1) { cout << " "; } } cout << endl; } return 0; } ``` ######[AI问答 | 199点数解答 | 2026-03-20 23:45:56]