C++ 统计数字各位之和不被 2 和 5 整除的数

#include using namespace std;

int digitSum(int n) { int sum = 0; while (n > 0) { sum += n % 10; n /= 10; } return sum; }

int main() { int n; cin >> n; int count = 0; for (int i = 1; i <= n; i++) { if (digitSum(i) % 2 != 0 && digitSum(i) % 5 != 0) { count++; } } cout << count << endl; return 0; }