C++实现：根据学生成绩等级输出对应分数范围

```cpp #include <iostream> using namespace std; int main() { int n; cin >> n; for (int i = 0; i < n; ++i) { char grade; cin >> grade; switch (grade) { case 'A': cout << "90-100分" << endl; break; case 'B': cout << "80-89分" << endl; break; case 'C': cout << "60-79分" << endl; break; case 'D': cout << "60分以下" << endl; break; } } return 0; } ``` ######[AI问答 | 179点数解答 | 2025-12-21 22:15:10]