Call virtual function through object pointer : object pointer « Class « C++

1. C++
2. Class
3. object pointer

Call virtual function through object pointer

  
#include <iostream>
using namespace std;
class base 
{
 public:
   virtual void vfunc(void)
    {
      cout << "This is base's vfunc()." << endl;
    }
};

class derived1 : public base 
{
 public:
   void vfunc(void)
    {
      cout << "This is derived1's vfunc()." << endl;
    }
};

class derived2 : public derived1 { };

int main(void)
{
   base *p, b;
   derived1 d1;
   derived2 d2;

   p = &b;        
   p->vfunc();
   p = &d1;       
   p->vfunc();
   p = &d2;       
   p->vfunc();    
 }
  
    
  

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