package class5_3_Calculator;

public class Calculator {

    private int memory = 0;
    private int newNumber = 0;

    public double add() {
        memory += newNumber;
        return memory;
    }

    public double subtract() {
        memory -= newNumber;
        return memory;
    }

    public void setNewNumber(int newNumber) {
        this.newNumber = newNumber;
    }

    public double getMemory() {
        return memory;
    }
}