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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. bool is_deg3(const int num) {
  5.     int value = 1;
  6.  
  7.     while (value < num) {
  8.         value *= 3;
  9.     }
  10.  
  11.     return value == num;
  12. }
  13.  
  14. int main()
  15. {
  16. 	const int num = 1'870'418'611;
  17.  
  18. 	cout << std::boolalpha << is_deg3(num);
  19. 	return 0;
  20. }
Success #stdin #stdout 0s 4392KB
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stdin
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Standard input is empty
stdout
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true
https://ideone.com/uD9dRU
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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