C++实现：求小于100且与7无关正整数的平方和

```cpp #include <iostream> using namespace std; bool isRelatedTo7(int num) { if (num % 7 == 0) return true; while (num > 0) { if (num % 10 == 7) return true; num /= 10; } return false; } int main() { int n; cin >> n; int sum = 0; for (int i = 1; i <= n; i++) { if (!isRelatedTo7(i)) { sum += i * i; } } cout << sum << endl; return 0; } ``` ######[AI问答 | 165点数解答 | 2025-10-29 20:05:19]