*Ⱉ*ฅ · 发布于 2022-09-04 · 浏览 668 回复 0

int u = 0, i;
string s;
cin >> s;
for ( i = 0; i < s.length(); i++) {
	u = u + (s[i] - '0');
}
cout << u;
return 0;