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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int fib(int n) {
  5. 	int a = 1;
  6. 	int b = 1;
  7. 	int c;
  8. 	for (int i = 2; i <= n; i++) {
  9. 		c = a + b;
  10. 		a = b;
  11. 		b = c;
  12. 	}
  13. 	return c;
  14. }
  15.  
  16. int main() {
  17. 	int n;
  18. 	cin >> n;
  19.  
  20. 	cout << fib(n) << endl;
  21. 	return 0;
  22. }
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/FcnBMR
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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