Lab_7/4 var (IIl semester)

#include"stdafx.h"
#include <iostream>

using namespace std;

class Operation {
public:
    virtual int printOperation() = 0;
};

class OperationPlus : public Operation {
public:
    int printOperation() {
        cout << "This is Plus" << endl;
        return 0;
    }
};

class OperationMinus : public Operation {
public:
    int printOperation() {
        cout << "This is Minus" << endl;
        return 0;
    }
};

int main()
{
    OperationPlus plus;
    OperationMinus minus;
    Operation * operation;
    operation = &plus;
    operation->printOperation();
    operation = &minus;
    operation->printOperation();
    system("pause");
}