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  1. #include <iostream>
  2.  
  3. int main(){
  4.     int a, sum;
  5.     sum = 0;
  6.  
  7.     std::cin >> a;
  8.  
  9.     do {
  10.         sum+=a%10;
  11.         a=a/10;
  12.     }
  13.     while(a%10 != 0);
  14.  
  15.     std::cout << sum << "\n";
  16. }
Success #stdin #stdout 0.01s 5316KB
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https://ideone.com/Bx0mCv
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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