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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	long long a, b=0, c; 
  6. 	cin >> a;
  7. 	while (c=a%10 && a>0){
  8. 	  if (c<=1)
  9. 	  b++;
  10. 	  a=a/10  ;     }
  11. 	  cout << b;
  12.  
  13. 	return 0;
  14. }
Success #stdin #stdout 0s 4356KB
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https://ideone.com/YbbEig
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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