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/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// A simple class hierarchy.
using System;
public class Shapes {
public static void Main() {
Triangle t1 = new Triangle();
Triangle t2 = new Triangle();
t1.width = 4.0;
t1.height = 4.0;
t1.style = "isosceles";
t2.width = 8.0;
t2.height = 12.0;
t2.style = "right";
Console.WriteLine("Info for t1: ");
t1.showStyle();
t1.showDim();
Console.WriteLine("Area is " + t1.area());
Console.WriteLine();
Console.WriteLine("Info for t2: ");
t2.showStyle();
t2.showDim();
Console.WriteLine("Area is " + t2.area());
}
}
// A class for two-dimensional objects.
public class TwoDShape {
public double width;
public double height;
public void showDim() {
Console.WriteLine("Width and height are " +
width + " and " + height);
}
}
// Triangle is derived from TwoDShape.
public class Triangle : TwoDShape {
public string style; // style of triangle
// Return area of triangle.
public double area() {
return width * height / 2;
}
// Display a triangle's style.
public void showStyle() {
Console.WriteLine("Triangle is " + style);
}
}
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