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  1. #include <iostream>
  2. using namespace std;
  3. int factorial(int n){
  4. //base case
  5. if(n==0)
  6. 	return 1;
  7.  
  8.  
  9. int smaller=factorial(n-1);
  10. int bigger=2*smaller;
  11. return  bigger;//2*factorial(n-1);
  12.  
  13. }
  14.  
  15. int main() {
  16. 	// your code goes here
  17. 	int n;
  18. 	cin>>n;
  19. 	int ans=factorial(n);
  20. 	cout<<ans<<endl;
  21. 	return 0;
  22. }
Success #stdin #stdout 0.01s 5516KB
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https://ideone.com/YzLpRJ
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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