NEED HELP: Computer Science 101 HW/JAVA

Question

I wrote the code for the problem in the title and seem to be having some problems. Can anyone give me some insight or tips on what I am doing wrong. Especially with the "if...else" portion of the code.

Here is the question #9. If you click the link it will show you a printout of the question. http://s21.postimg.org/nl2tmf5tj/Screen_Shot_2013_09_21_at_6_44_46_PM.png

Here is my code:

import java.util.*;
public class Ch3Ex9 {
/**
 * This method asks user for an x,y coordinates of a point, then returns the
 * distance to the origin and which quadrant the point is in.
 */
public static void main(String[] args)
{
    double xCoord; //x Coordinant initialized to 3
    double yCoord; //y Coordinant initalized to 4
    double hypo; //hypotenuse

    //declare an instance of Scanner to read the datastream from the keyboard
    Scanner keyboard = new Scanner(System.in);

    //get x Coordinant from the user
    System.out.print("Please enter the X coordinant: ");
    xCoord = keyboard.nextDouble();

    //get Y Coordinate from the user
    System.out.print("Please enter the Y coordinant: ");
    yCoord = keyboard.nextDouble();

    //calculate the hypotenuse which is the length to the origin
    hypo = Math.hypot(xCoord, yCoord);
            System.out.println("The hypotenuse is "+hypo);

    //determine which Quadrant the user-inputted point resides in
    if (xCoord>0) && (yCoord>0) //
        System.out.println("Point lies in Quadrant I.");
    else if (xCoord<0) && (yCoord>0)
        System.out.println("Point lies in Quadrant II.");
    else if (xCoord<0) && (yCoord<0)
        System.out.println("Point lies in Quadrant III.");
    else if (xCoord>0) && (yCoord<0)
        System.out.println("Point lies in Quadrant IV.")
    }
}

if Y==0 ---> lies on X-axis line. if X==0 ---> lies on Y-axis line. Both 0 ---> center.(not belong to any quadrant?) — huseyin tugrul buyukisik, Sep 21 '13 at 22:55
It's very difficult to help you solve the problems you're having if you don't explain what the problems are. — musical_coder, Sep 21 '13 at 22:57

score 5 · Accepted Answer · answered Sep 21 '13 at 22:58

5

There are too many parentheses. Change

if (xCoord>0) && (yCoord>0)

to

if (xCoord>0 && yCoord>0)

and similarly with the others.

answered Sep 21 '13 at 22:58

Dawood ibn Kareem

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NEED HELP: Computer Science 101 HW/JAVA

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