Triangle

import java.util.Scanner;

/*
 * Name: Romario Coffie
 * Date: 10/9/2015
 * Course: CSC-111 Intro to Java Programming
 * Problem: 3.27
 * Description: Determine if point is in triangle
 * Email: Romario.agc@gmail.com
*/

public class Angle{
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        System.out.println("Enter a value for X intercept then Y intercept.");
        Double xinter = input.nextDouble();
        Double yinter = input.nextDouble();

        System.out.println("Enter a values for a point, X then Y.");
        Double xval = input.nextDouble();
        Double yval = input.nextDouble();


        double m = -(yinter-0)/(xinter-0);
        double c = yval;
        if (xval<=xinter && yval <=yinter  && xval>=0 && yval >=0){

            if ( xval <= (yval - c)/m)
            System.out.println("The point is in the triangle");
            else{
                System.out.println("The point is not in the triangle");
            }
        }
        else{
            System.out.println("The point is not in the triangle");
        }
        input.close();
    }
}