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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. long int fib2(int n) {
  5. 	int a = 1;
  6. 	int b = 1;
  7. 	for (int i = 3; i <= n; i++){
  8. 		int pom = a;
  9. 		a = b;
  10. 		b = pom + b;
  11. 	}
  12. 	return b;
  13. }
  14. int main() { 
  15. 	cout << fib2(4) << endl;
  16. 	cout << fib2(11) << endl;
  17.     return 0;
  18. }
Success #stdin #stdout 0.01s 5324KB
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https://ideone.com/fOimWa
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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