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  1. #include <iostream>
  2.  
  3. int func(double value) {
  4.     std::string text = std::to_string(value);
  5.     int counter = 0;
  6.     bool flag = false;
  7.  
  8.     for ( int i = text.size()-1; i >= 0; i-- ) {
  9.     	if ( text[i] != '0' ) {
  10.     		flag = true;
  11.     	}
  12.     	if ( flag == true && text[i] != '.' ) {
  13.     		counter += 1;
  14.     	}
  15.     }
  16.  
  17.     return counter;
  18. }
  19.  
  20. int main() {
  21.     double number = 42.334501;
  22.     double number2 = 42334501.0000;
  23.  
  24.     std::cout << func(number) << "\n" << func(number2);
  25.  
  26.     return 0;
  27. }
  28.  
Success #stdin #stdout 0s 3228KB
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8
8
https://ideone.com/GxnGLu
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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