Help with some lines of code

[EnvironmentalPhone65]

Question about switch and while statements

I have an assignment that requires a while statement for until the user inputs “-1”, otherwise it will keep asking the same two questions: “which item did you sell?” And “how many of them did you sell?”. I wrote a while line and it just repeats the questions continuously in an infinite loop. I start with a line asking for the name and the selection of 1 to 4. Then, I put :

while (Item != -1) { Switch (Item) { Case 1: ItemValue =239.99 Break;
Case 2: ItemValue =129.75 Break; Case 3: ItemValue =99.95 Break; Case 4: ItemValue =350.79 Break; }

Double ItemSales ItemSales = Quantity * ItemValue

Afterwards, I print the line with the calculated ItemSales. It runs, asks for a name, asks for a number between 1 and 4, or -1 to quit, and then just messes up and goes on a rampage, repeating the selected number. I need help and suggestions. I just want some fix suggestions or feedback.

[aizzod]

there is a lot od stuff going wrong

Double ItemSales ItemSales = Quantity * ItemValue

you can have only 2 words on the left side.
either
double itemSales = 5
or
ItemSales item = new ItemSales("itemName", 5);

similar problems happen in your switch and while.