A.9. Chapter 9
A.9.1. Exercise 1 solution
set eCancel to −128 set eBadNumber to −1700 set OKtoExit to false repeat while not OKtoExit try display dialog "Enter a number" default answer "0" set theNumber to text returned of result as integer set OKtoExit to true on error errorMsg number errorNum if errorNum is eCancel then display dialog "Are you sure you want to Cancel?" buttons {"Yes", "No"} ¬ default button "No" if button returned of result is "Yes" then set OKtoExit to true end if else if errorNum is eBadNumber then display dialog "You entered a bad number, try running the program again" ¬ buttons {"OK"} with icon stop else display dialog "Error: " & errorMsg end if end try end repeat
A.9.2. Exercise 2 solution
The answer to Exercise 1 also satisfies this problem. You may want to just change the message about running the program again because it no longer applies.
A.9.3. Exercise 3 solution
-- handler to get an integer from the user global eCancel global eBadNumber
set eCancel to −128 set eBadNumber to −1700 on getInteger(promptString, min, max) set OKtoExit to false repeat while not OKtoExit try display dialog promptString default answer (min as string) set theNumber to text returned of result as integer if min is not missing value and theNumber < min then display dialog "The value must be greater than or equal to " & ¬ min as string buttons {"OK"} default button 1 else if max is not missing value and theNumber > max then display dialog "The value must be less than or equal ...
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