C++实现计算班级学生平均年龄

```cpp #include <iostream> using namespace std; int main() { int n; cin >> n; int total_age = 0; for (int i = 0; i < n; i++) { int age; cin >> age; total_age += age; } // 计算平均年龄 double average_age = static_cast<double>(total_age) / n; cout.precision(2); cout << fixed << average_age << endl; return 0; } ``` ######[AI问答 | 147点数解答 | 2026-04-01 20:08:47]