/***************************************************
* Your Name
* Lab #1
* slope.java
* Lab Instructor's Name
* Section Number
****************************************************
* The purpose of this lab is to familiarize yourself
* with debugging code.  Debugging is a very important
* skill that can only be learned through practice.
* The following program has several bugs in it.
* These bugs vary in type to expose you to a variety
* of errors.  Syntax, Run-time, and Logic errors all
* appear in this program and it is your job to
* identify and correct them where needed.  Follow
* these steps to complete the lab.
*
* 1.) Compile the program.
* 2.) Write any and all error messages here:
*
*
*
* 3.) Correct the error.
* 4.) Identify which type of error it was:
*
*
* 5.) Save and compile the corrected program.
* 6.) Run the program (or debugg as needed)
* 7.) Enter 0 0 for the first point and 1 3 for 
*     the second point.
* 8.) Write the output given by the program:
*
* The slope of the line is     .
*
* 9.) Determine whether the results are reasonable.
*
*
* 10) If the results aren't reasonable, check the
* slope formula and make any adjustments needed.
* 11) Save and compile again.
* 12) Run and write the new output here:
*
* The slope of the line is     .
*
* 13) Repeat steps 9 - 12 until output is correct.
* 14) What kind of error did you just fix?
*
*
*
* 15) Run the program again, and enter 0 0 and 0 0
* for the points.
* 16) Notice the NaN (Not a Number) answer given
* by the computer.  What kind of error is this:
*
*
*
*********************************************************/

// Finds the slope of a line between two points (x1, y1),
// and (x2, y2).

import java.io.*;

public class Slope extends Object
{
  public static void main(String[] args)
  {

  try
     {
       BufferedReader myReader =
               new BufferedReader(new InputStreamReader(System.in));

       // Prompt the user for x and y coordinates for the
       // first point and read them in.
       System.out.println( "Enter x coordinate of the first point : ");
       string input = myReader.readLine();
       double x1 = Double.parseDouble( input )
       System.out.println( "Enter y coordinate of the first point : ");
       string input = myReader.readLine();
       double y1 = Double.parseDouble( input )
       // Prompt the user for x and y coordinate for the
       // second point and read them in.
       System.out.println( "Enter x coordinate of the second point : ");
       string input = myReader.readLine();
       double x2 = Double.parseDouble( input )
       System.out.println( "Enter y coordinate of the second point : ");
       string input = myReader.readLine();
       double y2 = Double.parseDouble( input )
      // Calculate and display the slope of the line.
      double lineSlope = (x2 - x1) / (y2 - y1);
      System.out.println( "The slope of the line is " + lineSlope);
     }
     catch(Exception e)
     {
             System.out.println("bad input");
             System.exit(1);
     }




  // End main
  }
}