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typon

Sun Jan 16, 2005 12:27 pm


Returning to input

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hi, i'm having a problem with errorproofing. K E.g. if there are 3 numbers that i want from the user. they enter the first number correct, but they make a mistake on the second number, i error trap it so it an errorwindow pops up. 
but when i say 

loop
exit when hasch
end loop
userinput(procedure)

it will start from asking the first number again. is there a way to continue the procedure from a specific point?


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AsianSensation

Sun Jan 16, 2005 1:53 pm



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you probably have to set a couple of boolean variables inside your procedure. 

Like in your get procedure, you have something like this:


get num1
get num2
get num3

now incorporate some flags:

flag1 := false
flag2 := false

if flag1 = true and flag2 = true then
    get num3
elsif flag1 = true
    get num2
    flag2 := true
else
    get num1
end if


so that you check to see whether you have gotten the number before.


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typon

Sun Jan 16, 2005 5:56 pm



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What?


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Cervantes

Sun Jan 16, 2005 6:49 pm



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Do you know what boolean variables are?
Think about it.  Work it out.  Yourself.
hint: Asian left one line out of that if statement.