Eggs Profit and Loss

[Michael Humphreys]

Happy New Year To Everybody!!!

I am continuing my project Eggs Profit and Loss. I am now adding an input to the program so user can input the variables and the program would give the user the result. I have read one tutorial and this is what I came up with:

import java.util.Scanner;
public class chickens {

	private static final int yield = 0;
	private static double loss = 0;
	public static void main(String [] args){
		Scanner myScanner = new Scanner(System.in);
		System.out.println(myScanner.nextDouble());
		System.out.print("How many chickens do you have?");
		int chickens = myScanner.nextInt ();
		System.out.println ("How many of your chickens are laying hens?");
		int hens = myScanner.nextInt ();
		System.out.println ("What is the cost of feed?");
		double costOfFeed = myScanner.nextDouble ();
		System.out.println ("What is the price of eggs");
		double priceOfEggs = myScanner.nextDouble ();
		System.out.println ("How many eggs did you gather?");
		double numberOfEggs = myScanner.nextDouble ();

The problem is the program does nothing so I think the problem lies in the system scanner call...but I don't know where.
I do thank you all for the help so far.
Michael

[Mohamed Sanaulla]

What is the error/output you are getting? Try removing the print statements between the Scanner calls. I think even the print statements will be taken as the input to the Scanner.

[Michael Humphreys]

Hi All,
Well I figured this one out on my own. lol I was missing a line. I actually have two different ways of doing it. one producis the input on the same line as the string and the other puts the input below the string so all is well ty again.

here is the code I came up with:

import java.util.Scanner;
public class chickens {

	private static final int yield = 0;
	private static double loss = 0;
	public static void main(String [] args){
		Scanner myScanner = new Scanner(System.in);
		//System.out.println(myScanner.nextDouble());
		System.out.printf ("Number of chickens: ",31);
		int chickens = myScanner.nextInt ();
		System.out.println ("How many of your chickens are laying hens?");
		int hens = myScanner.nextInt ();
		System.out.println ("What is the cost of feed?");
		double costOfFeed = myScanner.nextDouble ();
		System.out.println ("What is the price of eggs");
		double priceOfEggs = myScanner.nextDouble ();
		System.out.println ("How many eggs did you gather?");
		double numberOfEggs = myScanner.nextDouble ();

Here is the output:


Number of chickens: 250
How many of your chickens are laying hens?
230
What is the cost of feed?
600
What is the price of eggs
2.35
How many eggs did you gather?
230

[Michael Humphreys]

I just wanted to post my clean copy of code so if some one is following this thread they can refrance good code. At least that is my intentions lol.

Here is the code:

/**
 * @author Michael Humphreys
 * This program was origanaly written in TandyBasic many years ago
 * This is an updated java program.
 *
 */
import java.util.Scanner;
public class chickens {
	
	private static double loss = 0;
	public static void main(String [] args){
		Scanner myScanner = new Scanner(System.in);
		System.out.printf ("Number of chickens: ",30);
		int chickens = myScanner.nextInt ();
		System.out.printf ("How many of your chickens are laying hens? ");
		int hens = myScanner.nextInt ();
		System.out.printf ("What is the cost of feed? ");
		double costOfFeed = myScanner.nextDouble ();
		System.out.printf ("What is the price of eggs? ");
		double priceOfEggs = myScanner.nextDouble ();
		System.out.printf ("How many eggs did you gather? ");
		double numberOfEggsLaid = myScanner.nextDouble ();
		int numberOfDays = 30;		
		double numberOfEggs = (numberOfEggsLaid * numberOfDays);
		double cost = costOfFeed;        
		double yield = (priceOfEggs *( numberOfEggsLaid / 12)); 

		System.out.println("The price of eggs? " + priceOfEggs);           
		System.out.println("Number Of Chickens =" + chickens);   
		System.out.println("Number Of Hens = " + hens);
		System.out.println("Number Of Eggs Laid = " + numberOfEggs);
		System.out.println("CostOf Feed =" + costOfFeed);

		if (Math.abs(yield - cost) < 0.005){      
			double breakEven = (yield - cost);
			System.out.println("You made NOTHIN'" + breakEven);
		}
		else{
			if (yield - cost > 0.00 != false){
				double profit = (yield - cost);                      
				System.out.println("Profit = " + profit);     
				System.out.println("You Made A Profit. Way To Go!!!");
			}
			else{

				if (yield - cost < 0.00 == true){
					double loss = (yield - cost);   
					System.out.println("Loss = "+ loss);     
					System.out.println("OH No!!, You had a LOSS!! What's the price of chicken meat???");  
				}     
			}               
		}     
	}
}

and the result:

How many eggs did you gather?1000
The price of eggs? 2.25
Number Of Chickens =1000
Number Of Hens = 1000
Number Of Eggs Laid = 30000.0
CostOf Feed =500.0
Loss = -312.5
OH No, You had a loss!! What's the price of chicken meat???

The next phase of this project is to build a GUI to ask for the variable input. I am sure I will have questions LOL.

Michael