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  1. #include <iostream>
  2.  
  3. double power(double x, int y)
  4. {
  5. 	if (y == 0)
  6. 		return 1;
  7. 	else if (y > 0)
  8. 		return x * power(x, y - 1);
  9. 	else
  10. 		return (1 / x) * power(x, y + 1);
  11. }
  12.  
  13. int main() 
  14. {
  15. 	std::cout << power(2, 5) << std::endl;
  16. 	std::cout << power(2.5, 3) << std::endl;
  17. 	std::cout << power(2, -5) << std::endl;
  18. }
Success #stdin #stdout 0s 4312KB
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32
15.625
0.03125
https://ideone.com/9VwwEe
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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