#include <iostream>
using namespace std;

class Base
{
public:
 virtual void print() const = 0;
};

class Test : public Base
{
public:
 void print();
};

void Test::print()
{
 cout << "Test::print()" << endl;
}

void main()
{
 // Base* pChild = new Test(); //compile error!
 // pChild->print();
}

#include <iostream>
using namespace std;

class Base
{
public:
 virtual void print() const = 0;
};

class Test : public Base
{
public:
 void print();
 void print() const;
};

void Test::print()
{
 cout << "Test::print()" << endl;
}

void Test::print() const
{
 cout << "Test::print() const" << endl;
}

void main()
{
 Base* pChild = new Test();
 pChild->print();
}
/*
Test::print() const
*/

#include <iostream>
using namespace std;

class Base
{
public:
 virtual void print() const = 0;
};

class Test : public Base
{
public:
 void print();
 void print() const;
};

void Test::print()
{
 cout << "Test::print()" << endl;
}

void Test::print() const
{
 cout << "Test::print() const" << endl;
}

void main()
{
 Base* pChild = new Test();
 pChild->print();

 const Test obj;
 obj.print();

 Test obj1;
 obj1.print();

 Test* pOwn = new Test();
 pOwn->print();
}

/*
Test::print() const
Test::print() const
Test::print()
Test::print()
*/