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  1. #include <iostream>
  2. #include <functional>
  3.  
  4. class Human
  5. {
  6.     std::function<void()> mFunc;
  7. public:
  8.     void setMyFunction(std::function<void()> func) { mFunc = func; }
  9.     void callMyFunction() { if (mFunc) mFunc(); }
  10. };
  11.  
  12. void someRandomFunction() { std::cout << "Hello world\n"; }
  13.  
  14. int main()
  15. {
  16.     Human lisa;
  17.  
  18.     lisa.setMyFunction(&someRandomFunction);
  19.     lisa.callMyFunction();
  20. }
  21.  
Success #stdin #stdout 0s 3468KB
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stdin
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Standard input is empty
stdout
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Hello world
https://ideone.com/V7YLaI
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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