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using System;
namespace inheritanceApplication {
class Shape {
public voID setWIDth(int w) {
wIDth = w;
}
public voID setHeight(int h) {
height = h;
}
protected int wIDth;
protected int height;
}
// Base class PaintCost
public interface PaintCost {
int getCost(int area);
}
// Derived class
class Rectangle : Shape, PaintCost {
public int getArea() {
return (wIDth * height);
}
public int getCost(int area) {
return area * 70;
}
}
class RectangleTester {
static voID Main(string[] args) {
Rectangle Rect = new Rectangle();
int area;
Rect.setWIDth(5);
Rect.setHeight(7);
area = Rect.getArea();
// Print the area of the object.
Console.Writeline("Total area: {0}", Rect.getArea());
Console.Writeline("Total paint cost: ${0}" , Rect.getCost(area));
Console.ReadKey();
}
}
}
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