Sum of CCF digits (full mark code + problem solving idea) 201512-1

Title Description

Their thinking

Treat long numbers as strings string Input , Every bit in the array Character to number Conduct Sum by accumulation

Code implementation

#include <iostream>
#include <cstring>
#include <algorithm>

using namespace std;

int main()
{
    
    string a;
    cin >> a;

    int res = 0;
    for (int i = 0; i < a.size(); i ++)
    {
    
        res += a[i] - '0';
    }

    cout << res;
    return 0;
}