Question

How to use object pointer with virtual method in C++

Answer 1

#include <iostream>

using std::cout;
using std::endl;

class Base {
public:
	virtual void show(void) { cout << "class Base" << endl; };
};

class Derived : public Base {
public:
	virtual void show(void) { cout << "class Derived" << endl; };
};

int main(void) 
{
	Base *p = new Base;
	p->show();

	p = new Derived;
	p->show();
}



/*
run:

class Base
class Derived

*/

 

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