// A client of Point that instantiates three points and calculates
// the circumference of the implied triangle.
using System;
public class Application{
public static Point PromptPoint(string prompt){
double x, y;
Console.WriteLine(prompt);
x = double.Parse(Console.ReadLine());
y = double.Parse(Console.ReadLine());
return new Point(x,y);
}
public static void Main(){
Point p1, p2, p3;
double p1p2Dist, p2p3Dist, p3p1Dist, circumference;
p1 = PromptPoint("Enter first point");
p2 = PromptPoint("Enter second point");
p3 = PromptPoint("Enter third point");
p1p2Dist = Math.Sqrt((p1.x - p2.x) * (p1.x - p2.x) +
(p1.y - p2.y) * (p1.y - p2.y));
p2p3Dist = Math.Sqrt((p2.x - p3.x) * (p2.x - p3.x) +
(p2.y - p3.y) * (p2.y - p3.y));
p3p1Dist = Math.Sqrt((p3.x - p1.x) * (p3.x - p1.x) +
(p3.y - p1.y) * (p3.y - p1.y));
circumference = p1p2Dist + p2p3Dist + p3p1Dist;
Console.WriteLine("Circumference: {0} {1} {2}: {3}",
p1, p2, p3, circumference);
Console.ReadLine();
}
} | |
The thing to notice in this program
is the numerous occurrences of the
names x and y. These names refer to
the x and y coordinates of Points.
|