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  1. #include <iostream>
  2. #include <string>
  3. #include <functional>
  4.  
  5. int main() {
  6.     std::function<int(int)> fib = [&fib] (int n) {
  7.         return (n <= 1) ? 1 : fib(n - 1) + fib(n - 2);
  8.     };
  9.     std::cout << fib(4) << std::endl;
  10. }
Success #stdin #stdout 0s 4336KB
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5
https://ideone.com/LGRfvm
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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