#include <iostream> using namespace std; long long number , sum = 0; int main() { cin >> number; while (number) { sum += number % 10; number /= 10; } cout << sum << endl; return 0; }
#include <iostream> using namespace std; long long number , sum = 0; int main() { cin >> number; while (number) { sum += number % 10; number /= 10; } cout << sum << endl; return 0; }