Arrays of Pointers to Member Functions - C++ Class

C++ examples for Class:Member Function

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Description

Arrays of Pointers to Member Functions

Demo Code

#include <iostream> 
 
class Dog /*from w w w .  j  a  v a 2 s.  c  o  m*/
{ 
public: 
    void speak() const { std::cout << "Woof!\n"; } 
    void move() const { std::cout << "Walking to heel ...\n"; } 
    void eat() const { std::cout << "Gobbling food ...\n"; } 
    void growl() const { std::cout << "Grrrrr\n"; } 
    void whimper() const { std::cout << "Whining noises ...\n"; } 
    void rollOver() const { std::cout << "Rolling over ...\n"; } 
    void playDead() const 
           { std::cout << "Is this the end of Little Caesar?\n"; } 
}; 
 
typedef void (Dog::*PDF)() const; 
 
int main() 
{ 
    const int maxFuncs = 7; 
    PDF dogFunctions[maxFuncs] = 
           {   &Dog::speak, 
               &Dog::move, 
               &Dog::eat, 
               &Dog::growl, 
               &Dog::whimper, 
               &Dog::rollOver, 
               &Dog::playDead 
        }; 
 
    Dog* pDog =0; 
    int method; 
    bool fQuit = false; 
 
    while (!fQuit) 
    { 
          std::cout << "(0) Quit (1) Speak (2) Move (3) Eat (4) Growl\n"; 
          std::cout << "(5) Whimper (6) Roll Over (7) Play Dead: "; 
          std::cin >> method; 
          if (method == 0) 
           { 
               fQuit = true; 
               break; 
           } 
          else 
           { 
               pDog = new Dog; 
               (pDog->*dogFunctions[method - 1])(); 
               delete pDog; 
           } 
          std::cout << std::endl; 
    } 
    return 0; 
}

Result


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