From: Ulrich Holtzhausen <holtzza@...>
Date: 2009-01-12T07:15:17+09:00
Subject: Checking if input == Integer/String?

Hi,

I'm all new to programming and all new to Ruby - hope I haven't made a
mistake by choosing this language.

I'm trying to teach myself by creating tiny (mostly useless) little
applications and then extend on them as I learn.

Today I started out and this is what I got:

#!/usr/bin/env ruby

#Favourite number
puts "What is your favourite number?"
num = gets.to_i
if num != Integer
  puts "Please type a number"
else
  better = num + 1
  puts "Hah! #{num} is pathetic! #{better} is a much better number!!!"
end

Somewhere along the line there's a mistake however, but I take it you
guru's can see what I'm trying to do here?

How can I check if the variable 'num' is an integer and if not, ask the
user to re-input with an integer?

Thanks in advance!
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