From: Teodor Carstea <teodorcarstea@...>
Date: 2009-12-16T17:24:33+09:00
Subject: Re: a program error

Zhao Lu wrote:
> it appears that yspeed is "", which implies speed from gets is not what 
> you expect it to be.  puts speed after you gets it and see.

The answer is

speed = gets.to_s

puts speed gave integer, but puts xspeed(and yspeed too) gave "". You 
were about right. I fell so stupid...

Thanks!
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