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c_cpp
a year ago
275 B
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#include <iostream>
using namespace std;
int digitSum(int k) 
{
    if (k == 0) 
    {
        return 0;
    }
    else 
    {
        return k % 10 + digitSum(k / 10);
    }
}
int main() 
{
    int k;
    cin >> k;
    cout << digitSum(k);
    return 0;
}
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