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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class B {
  5. public:
  6.     void up() {
  7.         std::cout << "up" << std::endl;
  8.     }
  9.     void down() {
  10.         std::cout << "down" << std::endl;
  11.     }
  12.     void init( void(B::*someFunc)() , void(B::*otherFunc)() ) {
  13.         m_execute = someFunc;
  14.         B* newB = new B();
  15.         m_b = newB;
  16.         m_b->m_execute = otherFunc;
  17.     }
  18.     void find() {
  19.         run_my_execute();
  20.         m_b->run_my_execute();
  21.     }
  22. private:
  23.     void(B::*m_execute)();
  24.     B* m_b;
  25.     void run_my_execute() {
  26.         (this->*m_execute)();
  27.     }
  28. };
  29.  
  30. int main(){
  31.     B* b = new B();
  32.     b->init(&B::up, &B::down);
  33.     b->find();
  34.     return 0;
  35. }
  36.  
  37.  
Success #stdin #stdout 0s 4284KB
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https://ideone.com/TDEMu5
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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