virtual functions accessed from pointer : virtual function « Class « C++

1. C++
2. Class
3. virtual function

virtual functions accessed from pointer

  
#include <iostream>  
  using namespace std;  
  class Base{  
     public:  
        virtual void show(){ cout << "Base\n"; }  
    };  
  class Derv1 : public Base{  
     public:  
        void show(){ cout << "Derv1\n"; }  
  };  
  class Derv2 : public Base{  
     public:  
        void show(){ cout << "Derv2\n"; }  
    };  
  int main(){  
     Derv1 dv1;           
     Derv2 dv2;           
     Base* ptr;           
    
     ptr = &dv1;          
     ptr->show();         
    
     ptr = &dv2;          
     ptr->show();         
     return 0;  
  }
  
    
  

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