/* * C# Program to Display Cost of a Rectangle Plot Using Inheritance */ using System; class Rectangle { protected double length; protected double width; public Rectangle(double l, double w) { length = l; width = w; } public double GetArea() { return length * width; } public void Display() { Console.WriteLine("Length: {0}", length); Console.WriteLine("Width: {0}", width); Console.WriteLine("Area: {0}", GetArea()); } } class Tabletop : Rectangle { private double cost; public Tabletop(double l, double w) : base(l, w) { } public double costcal() { double cost; cost = GetArea() * 70; return cost; } public void Display() { base.Display(); Console.WriteLine("Cost: {0}", costcal()); } } class CalRectangle { static void Main(string[] args) { Tabletop t = new Tabletop(7.5, 8.03); t.Display(); Console.ReadLine(); } } /* Length: 7.5 Width: 8.03 Area: 60.225 Cost: 4215.75