c51.cpp

此文件可以能帮你求体积

// c51.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

#include <iostream.h>

class Base
{
public:
	virtual void Fn()
	{
		cout << "In Base class\n";
	}
};

class SubClass : public Base
{
public:
	virtual void Fn()
	{
		cout << "In Subclass\n";
	}
};

void Test( Base& b )
{
	b.Fn();
}

int main(int argc, char* argv[])
{	
	Base bc;
	SubClass sc;

	cout << "Calling Test(bc)\n";
	Test( bc );

	cout << "Calling Test(sc)\n";
	Test( sc );

	return 0;
}