/*
 *  ===================================================================
 *  Quadratic.java : Compute roots of quadratic equation having complex
 *                   coefficients.
 *
 *  Written By : Mark Austin                                   May 1998
 *  ===================================================================
 */

import java.lang.Math;
import java.util.*;
import java.io.*;

public class Quadratic {

   public static void main( String args[] ) {

   Complex cA = new Complex();
   Complex cB = new Complex();
   Complex cC = new Complex();
   Complex cRoot1, cRoot2;
   String sLine;

      // Print Welcome Message 

      System.out.println("Welcome to The Quadratic Equation Solver");
      System.out.println("----------------------------------------");

      // Prompt User for Coefficients in Quadratic Equation...

      System.out.println("Please Enter coefficients for equation");
      System.out.println("a.x^2 + b.x + c");

      // Get Coefficient cA ....

         ...... fill in the missing details here ....

      // Get Coefficient cB ....

         ...... fill in the missing details here ....

      // Get Coefficient cC ....

         ...... fill in the missing details here ....

      // Print details of Quadratic Equation to screen ...

         ...... fill in the missing details here : you should
                use the toString() method in Class complex....

      // Check for Degenerate roots (i.e., cA and cB both equal to zero).

         ...... fill in the missing details here ....

      // Compute the matrix discriminant .....

         ...... fill in the missing details here : you should
                use the Mult(), Sub() and Scale() methods in 
                Class complex.....

      // Compute and print roots to equation .....

         ...... fill in the missing details here ....

      // Check that roots of equation are correct ....

         ...... fill in the missing details here ....

      // Verify that root1 is correct ....

         ...... fill in the missing details here ....

      // Verify that root2 is correct ....

         ...... fill in the missing details here ....
   }

   /* 
    *  ===========================================================
    *  Method keyboardInput() : Get line of input from keyboard
    * 
    *  Input  : None.
    *  Output : String sLine -- character string of keyboard input
    *  ===========================================================
    */

    static String keyboardInput() {
    String sLine;

        DataInputStream in = new DataInputStream(System.in);
        try{
            sLine = in.readLine();
            return sLine;
        }
        catch (Exception e){
            return "error";
        }
    }
}