Computer Science Canada

true statement

Author:	the_scott_mans [ Tue Apr 01, 2003 2:17 pm ]
Post subject:	true statement
i really need help with how to add up all the selections with the true statement. I am makeing a cash register and i was told to use the true statement thing well i was wondering what it is that i need to put for the true statement to get it to add up all of the selected true statements

Author:	the_scott_mans [ Tue Apr 01, 2003 3:14 pm ]
Post subject:
i am also wondering how i can make it reconize a selection i have it laid out in list form, numbered, and indented. When i use the if statement it does not reconize it.

Author:

Tony [ Tue Apr 01, 2003 5:00 pm ]

Post subject:

you're probably refering to boolean variable. It is used like a flag to mark stuff. For example:

code:

var total:int %counter
var price:int %variable
var word:string
var tax:boolean %true/false flag for tax

loop
put "enter price"
get price
total := total + price

exit when price =0
end loop

put "add tax? y/n"
get word

if word="y" then
tax := true
else
tax := false
end if

%now you can use that "tax" variable to check what the user selected from before

if tax=true then
put total+total*0.15
else
put total
end if

Author:	the_scott_mans [ Tue Apr 01, 2003 5:44 pm ]
Post subject:
thanks that helps but how does it work with a list. like all the items are numbered and you select the numbers then press done and it adds the tax and price of each selection.

Author:	Tony [ Tue Apr 01, 2003 5:52 pm ]
Post subject:
make another array of boolean type with a coresponding numbers. such as tax(1) would keep true/false value about item(1)

Author:	the_scott_mans [ Tue Apr 01, 2003 6:18 pm ]
Post subject:
so would i just put if choice = "1" then choice := true else choice := false end if if choice = "2" then choice := true else choice := false end if etc. and then if choice = true then put total+total*0.15 end if or how would i get the computer to record all the prices then add them up

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