From: Stefano Crocco <stefano.crocco@...>
Date: 2012-11-29T06:34:40+09:00
Subject: Re: This is not working.

On Thursday 29 November 2012 Radu M. wrote
> Hi...I tried this code:
> 
> puts 'Level 1'
> puts '1+1'
> cal = gets.chomp
> if cal == 1 + 1
> puts 'Correct'
> else
> puts 'Incorrect:('
> end
> 
> but when I type 2 it says incorrect...
> Is this feature available on Ruby?
> 
> --
> Posted via http://www.ruby-forum.com/.

cal is a string. 1 + 1 is a number (class Fixnum to be precise). A string 
can't be equal to a number. If you want to compare the two, you'll need to 
convert one of the two:

if cal.to_i == 1 + 1

or 

if cal == (1+1).to_s

Stefano