Thread: Java Cupcake Counter Help

Hello everyone,

I am in need of help in creating loop for the following scenario. I am new to java and have I am currently stuck on this one.


1 - one individual cupcake sold (for $2)
3 - a "package of 3" sold (for $5)
1 - one individual cupcake sold (for $2)
6 - a "package of 6" sold (for $8)

Build a program that will accept the input of each sale. Use a loop that will keep
accepting input until a sentinel value of 0 (zero) is entered. Ignore any input that is not 1 or 3 or 6; use
an if or select to accomplish this. While in the loop, you will accumulate the following three values:

* Total amount of dollar sales. For the input (what package size was sold), use an if or select to
determine the appropriate dollar sales to add. The prices are above; for example, if "3" is
entered, add $5 to the Total amount of dollar sales.
* Total number of cupcakes sold. Add the appropriate number; for example, if "6" is entered, add
6 to the Total number of cupcakes sold.
* Number of multi-cupcake packages sold. If the input package size sold is larger than 1, add one
to this counter. (This will accumulate "we sold 2 multi-cupcake packages", not count how many
cupcakes were in those packages.) Use an if or select to accomplish this.


Here is what I currently have

public static void main(String[] args) {
 
        //Initialize Variables
        int totalDollarSales = 0;
        int numberCupcakesSold = 0;
        int countMultiCupcakePackages = 0;
        int oneCupcake = 3;
        int threeCupcake = 5;
        int sixCupcake = 8; 
 
        //Create a Scanner for Input
        Scanner input = new Scanner(System.in);  
 
        //Loop cup cake counter
 
 
        //Read an initial input
        System.out.println("Enter package size sold: 1, 3, or 6: ");
        int data = input.nextInt();
 
 
        //Keep reading data until the input is 0
        int sum = 0;
        while (data !=0) {
            sum += data;
 
            //Read the next input
            System.out.println("Enter package size sold - 1, 3, or 6: ");
            data = input.nextInt();
        }

The way you have it written in that snippet will not compile without errors, although the fix is very minor and may have just been from not copying and pasting all of your code. There is also an error in that your code doesn't accurately model the situation you were given. Take a look at the value for int oneCupcake. Once these fixes are done, the rest of your code has to go in your loop with just a few if-else statements and updating the 3 field variables to be changed. Optionally, to make the function of the field variables a bit clearer, think which ones will never have their value changed and make them a constant using the keyword, "final" with the appropriate name changes.

I currently have this

  public static void main(String[] args) {
 
        //Initialize Variables
        int totalDollarSales = 0;
        int numberCupcakesSold = 0;
        int countMultiCupcakePackages = 0;
        int oneCupcake = 3; 
        int threeCupcake = 5;
        int sixCupcake = 8;
 
 
        //Create a Scanner for Input
        Scanner input = new Scanner(System.in);  
 
 
 
        //Read an initial input
        System.out.println("Enter package size sold: 1, 3, or 6: ");
        int data = input.nextInt();
 
 
        //Keep reading data until the input is 0
          while (data !=0){
              if ( data == 1 ) {
                totalDollarSales = 3; 
                numberCupcakesSold = 1;
                countMultiCupcakePackages = 0;
              }
              else if ( data == 3 ) {
                totalDollarSales = 5;
                numberCupcakesSold = 3;
                countMultiCupcakePackages = 1;
              }
             else if ( data == 6 ) {
                totalDollarSales = 8;
                numberCupcakesSold = 6;
                countMultiCupcakePackages = 1;
             }
            //Read the next input
 
            System.out.println("Enter package size sold - 1, 3, or 6: ");
            data = input.nextInt();
 
          //Variables
 
 
        }
 
 
        System.out.println("Total Dollar Sales is " + );
        System.out.println("Total Cupcakes Sold is " + );
        System.out.println("Multi Cupcake Packages is " + );
 
    }
}

I know it doesn't work. I am new to java... thats the reason I posted here for tips and help.

Thanks

Norm I am getting the message:

"Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - Erroneous tree type: <any>
at cupcakecounter.java.CupCakeCounterJava.main(CupCak eCounterJava.java:72)
Java Result: 1"

It is because I have not entered variables for the:
System.out.println("Total Dollar Sales is " + );

System.out.println("Multi Cupcake Packages is " + );


That said here is my current code.

    public static void main(String[] args) {
 
        //Initialize Variables
        int totalDollarSales = 0;
        int numberCupcakesSold = 0;
        int countMultiCupcakePackages = 0;
        int oneCupcake = 3; 
        int threeCupcake = 5;
        int sixCupcake = 8;
 
 
        //Create a Scanner for Input
        Scanner input = new Scanner(System.in);  
 
 
 
        //Read an initial input
        System.out.println("Enter package size sold: 1, 3, or 6: ");
        int data = input.nextInt();
 
 
        //Keep reading data until the input is 0
        int sum = 0;  
        while (data !=0){
              if ( data == 1 ) {
                totalDollarSales = 3; 
                numberCupcakesSold = 1;
                countMultiCupcakePackages = 0;
              }
              else if ( data == 3 ) {
                totalDollarSales = 5;
                numberCupcakesSold = 3;
                countMultiCupcakePackages = 1;
              }
             else if ( data == 6 ) {
                totalDollarSales = 8;
                numberCupcakesSold = 6;
                countMultiCupcakePackages = 1;
             }
            //Get user input
            sum += data;  
 
 
 
            //Read the next input
 
            System.out.println("Enter package size sold - 1, 3, or 6: ");
            data = input.nextInt();
 
        }
 
 
        System.out.println("Total Dollar Sales is " + );
        System.out.println("Total Cupcakes Sold is " + sum);
        System.out.println("Multi Cupcake Packages is " + );
 
    }
}

I believe that "System.out.println("Total Cupcakes Sold is " + sum);" is correct and will give me the correct outcome. I just need help on the other two.

Thanks

72 and 74 state "illegal state of expression" if that is what you are asking.

My problem is I do not know how to express the correct variables together for example to find out the total Sales...

Thank you for the help, I figured it out finally.

Originally Posted by Hawks

Thank you for the help, I figured it out finally.

Can you post your final code? I need help with this problem as well and I would like to compare.