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  1. #include <iostream>
  2. #include <functional>
  3. using namespace std;
  4.  
  5. std::function<int(int)> f;
  6.  
  7. int main() {
  8. 	// your code goes here
  9.  
  10. 	f = [](int a) { if (a==0) return 1; else return a*f(a-1); };
  11.  
  12. 	int a = f(3);
  13.  
  14. 	std::cout << "a: " << a << std::endl;
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 3428KB
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Standard input is empty
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a: 6
https://ideone.com/6hwVGy
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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