ac 听澜 · 发布于 2026-02-01 · 浏览 216 回复 0 include <bits/stdc++.h> using namespace std; int main() { int n, a, b, c; cin >> n; a = n % 10; b = n / 10 % 10; c = n / 100 % 10; cout << a + b + c; return 0; }