Re: [MACTCL] Validating stdin

[Damon C. <da...@yo...>]

> So I did a little if statement
> 
> if { [string match {[0-9]} $answer1 } {
> 	puts "Yes, it a number!"
> } else {
> 	puts "Nope, it not a number!"
> }
> 
> So, what I guess I'm looking for is a way to ask for the input again 
> until it's a number.

    What you're probably looking for is something like:

puts -nonewline "Enter volume: "
while { ![string is integer -strict [set answer [gets stdin]]] } {
    puts -nonewline "Enter volume: "
}


    This will loop and output the prompt "Enter Volume: " until the
user types an integer.  You could make it a little better, but that's
the short of it. 0-]

Damon