n位数码和

数码和

#include<iostream>
using namespace std;
int main() {
	int a;
	cin >> a;
	int x;
	int sum = 0;
	while (a >0) {
		
		x= a%10;
		a /= 10;
		sum += x;
		
	}
	cout << sum;


	return 0;
}