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  1. #include <iostream>
  2. #include <string>
  3. int main()
  4. {
  5. int liczba = 1234981331;
  6. std::string lanuch = std::to_string(liczba);
  7.  
  8. int licznik = 0;
  9. for (int i = 0; i < lanuch.length(); i++)
  10. if (lanuch[i] == '1') licznik++;
  11. std::cout << licznik << std::endl;
  12. }
Success #stdin #stdout 0s 3228KB
stdin
Standard input is empty
stdout
3