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  1. #include <iostream>
  2. #include <functional>
  3. using namespace std;
  4.  
  5. std::function<int(int)> makeAdd(int x) {
  6. 	return [x](int i) { return x + i; };
  7. }
  8.  
  9. void use(std::function<int(int)> f) {
  10. 	int result = f(888);
  11. 	cout << "f(888) = " << result;
  12. }
  13.  
  14. int main() {
  15. 	int i = 7; // or from cin
  16. 	std::function<int(int)> add = makeAdd(i);
  17. 	use(add);
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 4368KB
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stdin
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Standard input is empty
stdout
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f(888) = 895
https://ideone.com/yqVRmo
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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