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using System;
namespace polymorphismApplication {
abstract class Shape {
public abstract int area();
}
class Rectangle: Shape {
private int length;
private int wIDth;
public Rectangle( int a = 0, int b = 0) {
length = a;
wIDth = b;
}
public overrIDe int area () {
Console.Writeline("Rectangle class area :");
return (wIDth * length);
}
}
class RectangleTester {
static voID Main(string[] args) {
Rectangle r = new Rectangle(10, 7);
double a = r.area();
Console.Writeline("Area: {0}",a);
Console.ReadKey();
}
}
}
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