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  1. #include <iostream>
  2.  
  3. int fromBin(int n)
  4. {
  5.     int factor = 1;
  6.     int total = 0;
  7.  
  8.     while (n != 0)
  9.     {
  10.         total += (n%10) * factor;
  11.         n /= 10;
  12.         factor *= 2;
  13.     }
  14.  
  15.     return total;
  16. }
  17.  
  18. int main() {
  19. 	std::cout << fromBin(101010) << std::endl;
  20. 	return 0;
  21. }
Success #stdin #stdout 0s 4136KB
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https://ideone.com/wRM5a0
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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