how can i errortrap a string

[goroyoshi]

What is it you are trying to achieve?
I would like to error trap a string


What is the problem you are having?
I HAVE NO IDEA HOW TO DO IT!


Describe what you have tried to solve this problem
nothing (please read above comment)


Post any relevant code (You may choose to attach the file instead of posting the code if it is too long)

Turing:

var x : array 1 .. 3 of int var input : array 1 .. 3 of string var difficulty : string put "what difficulty would you like to do" put "easy is a number from 1 - 10" put "medium is a number from 1 - 100" put "hard is a number from 1 - 1000" get difficulty % this is the part that i want to errortrap if difficulty = "easy"         then     put "guess a number from 1 to 10"     var guess1 : int     randint (x (1), 1, 10)     loop         loop             get input (1)             exit when strintok (input (1))             put "please enter an integer"         end loop         guess1 := strint (input (1))         if guess1 < x (1)                 then             put "too low"         end if         if guess1 > x (1)                 then             put "too high"         end if         exit when guess1 = x (1)     end loop     put "hooray you got it right" end if if difficulty = "medium"         then     put "guess a number from 1 to 100"     var guess2 : int     randint (x (2), 1, 100)     loop         loop             get input (2)             exit when strintok (input (2))             put "please enter an integer"         end loop         guess2 := strint (input (2))         if guess2 < x (2)                 then             put "too low"         end if         if guess2 > x (2)                 then             put "too high"         end if         exit when guess2 = x (2)     end loop     put "hooray you got it right" end if if difficulty = "hard"         then     put "guess a number from 1 to 1000"     var guess3 : int     randint (x (3), 1, 1000)     loop         loop             get input (3)             exit when strintok (input (3))             put "please enter an integer"         end loop         guess3 := strint (input (3))         if guess3 < x (3)                 then             put "too low"         end if         if guess3 > x (3)                 then             put "too high"         end if         exit when guess3 = x (3)     end loop     put "hooray you got it right" end if

Please specify what version of Turing you are using
4.1.1

[Tony]

goroyoshi @ Thu Mar 03, 2011 8:08 pm wrote:

I HAVE NO IDEA HOW TO DO IT!

You can start by describing what error trapping a string means.

[goroyoshi]

alright, i already have an errortrap for my integers (when you put text/decimal it will say please enter an integer)
so i want it that when you enter for the string "difficulty" that if its wrong or is a number, it will say please enter one of the three options
clear?

[ihsh]

First, I think you should let difficulty be an int variable. That way you don't have to worry about the person typing the word in capital letters.
Also, I don't think arrays are necessary here because you are only going to use the variables to store one value each. Furthermore, your code is a bit long. The only difference between the three difficulty levels is the range of the random number, yet you are having three almost-identical sections of code under each condition. You could just make a variable for upper-limit of the random number and save yourself some space.

Anyway, suppose that you are just adding the errortrap without changing any other part of the code there are many ways that you can choose, for example:
1. Use procedures

Turing:

procedure easyGame     %your code for the easy level end easyGame procedure mediumGame     %your code for the medium level end mediumGame procedure difficultGame     %your code for the difficult level end difficultGame loop     get difficulty     if difficulty = "easy" then         easyGame         exit     elsif difficulty = "medium" then         mediumGame         exit     elsif difficulty = "difficult" then         exit         difficultGame         exit     else %If choice is invalid,         %Re-ask for input     end if end loop

2. Without procedures:

Turing:

loop     get difficulty     if difficulty = "easy" then         %your code for the easy level         exit     elsif difficulty = "medium" then        %your code for the medium level         exit     elsif difficulty = "difficult" then     %your code for the difficult level         exit             else  %If choice is invalid,         %Re-ask for input     end if end loop

3. Without procedures (II):

Turing:

loop     get difficulty     exit when difficulty="easy" or difficulty="medium" or difficulty="difficult"     %Re-ask for input end loop if difficulty = "easy" then         %your code for the easy level       elsif difficulty = "medium" then        %your code for the medium level         else        %your code for the difficult level end if