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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. // zdefiniuj funkcję
  5. long int fib2(int n) {
  6.     if (n == 0)return 0;
  7.     if (n == 1)return 1;
  8.  
  9.     long int a = 0;
  10.     long int b = 1;
  11.     long int c;
  12.  
  13.     for(int i = 2; i <= n; i++) {
  14.         c = a + b;
  15.         a = b;
  16.         b = c;
  17.     }
  18.  
  19.     return b;
  20.  
  21.     }
  22. int main() {
  23.     cout << fib2(4) << endl;
  24.     cout << fib2(11) << endl;
  25.     return 0;
  26. }
Success #stdin #stdout 0.01s 5292KB
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https://ideone.com/79wzJg
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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