/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Add a constructor to Triangle.
using System;
// A class for two-dimensional objects.
class TwoDShape {
double pri_width; // private
double pri_height; // private
// properties for width and height.
public double width {
get { return pri_width; }
set { pri_width = value; }
}
public double height {
get { return pri_height; }
set { pri_height = value; }
}
public void showDim() {
Console.WriteLine("Width and height are " +
width + " and " + height);
}
}
// A derived class of TwoDShape for triangles.
class Triangle : TwoDShape {
string style; // private
// Constructor
public Triangle(string s, double w, double h) {
width = w; // init the base class
height = h; // init the base class
style = s; // init the derived class
}
// Return area of triangle.
public double area() {
return width * height / 2;
}
// Display a triangle's style.
public void showStyle() {
Console.WriteLine("Triangle is " + style);
}
}
public class Shapes3 {
public static void Main() {
Triangle t1 = new Triangle("isosceles", 4.0, 4.0);
Triangle t2 = new Triangle("right", 8.0, 12.0);
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());
}
}
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