strint not ok

[wolfdeity]

I am new to programing in turring and I'm trying to make a custom dice roller app that first asks the user how many dice the user wants followed by the amount of sides the die has.
since I don't want the program to crash when the user accidentally inputs a non-numeric input I used the strintok command.
the problem is that this makes me have to put all of the error messages at the end of the code because of the way that the else then statments are which is making it very dificult to debug the code
does anyone have anyway I could put the error message before the rest of the code?

Quote:

%simple dice
%May 12 2014

loop
locate (1,1)
%sets the variables
var input : string
var in2 : string
var i : int
var final : int
var c : int
%ask for total dice
loop
put "How many dice are you rolling?"
get input
if strintok (input)
then
c:= strint (input)

else
put "That is not a number, try again."
end if

end loop


%asks for total sides
put "How many sides does the die have?"
loop
get in2
if strintok (in2) then
i:= strint (in2)
else
put "That is not a number, try again?"

%roll's die
put "Rolling..."
for counter : 1 .. c %counts down how many dice to roll
randint (final, 1, i)
put final
%outputs
if final = i
then
put "Critical Hit"
end if
if final = 1
then
put "Critical Miss"
end if
%Ending Cleanup

delay (100)
end for
put"###################################" %makes for cleaner seperation
end if
end loop

[keyboardwalker]

I think what you're looking for is not.
If you not the original condition then
the logic is reversed and the cases
can be switched.
A section of an if is executed
when then condition above it is true.
if the condition becomes not strintok
then it should execute the error
(the first case, so it's easier "to debug")

Example:

if <condition>
a
else
b
end if

will do the exact same as:

if <not condition>
b
else
a
end if

in Turing syntax it would be something like

if x = y then
a
else
b
end if

will do the exact same as:

if not x = y then
b
else
a
end if

The operator is, "not" or the 'shorthand', "~" will also do what you want.