C++ 实现：根据购票数量计算星际航行票总金额

```cpp #include <iostream> using namespace std; int main() { int n; cin >> n; int total; if (n >= 50) { total = n * 200; } else { total = n * 300; } cout << total; return 0; } ``` ######[AI问答 | 90点数解答 | 2025-12-12 19:24:36]