C++实现求多组n到m之间正整数和

```cpp #include <iostream> using namespace std; int main() { int t; cin >> t; for (int i = 0; i < t; i++) { int n, m; cin >> n >> m; int sum = 0; // 计算n到m之间所有正整数的和 for (int j = n; j <= m; j++) { sum += j; } cout << sum << endl; } return 0; } ``` ######[AI问答 | 147点数解答 | 2026-05-23 20:31:44]