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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n;
  6. 	cin>>n;
  7. 	int a=1,b=1,c;
  8. 	for(int i=2;i<=n;i++){
  9. 		c=a+b;
  10. 		a=b;
  11. 		b=c;
  12. 	}
  13. 	if(n==0 || n==1)
  14. 	   cout<<1;
  15. 	else
  16. 	    cout<<b;
  17.  
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 5348KB
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https://ideone.com/sOgUvN
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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