From: Marnen Laibow-Koser <marnen@...>
Date: 2010-01-16T01:07:48+09:00
Subject: Re: Please Help I'm new in Ruby -- Input Problem

Nolly Mejia wrote:
> Hi,
> 
> I'm interested to learn this language. I'm using Eclipse with Ruby
> plugin. I encountered this problem. I place this code (got from an
> internet site):
> 
> def addtwo(a, b)
>        a + b; # return a + b
> end
> 
> print "Please enter number 1 : ";
> 
> val1 = gets;
> print "Please enter number 2 : ";
> val2 = gets;
> print "Answer : " , (val1.to_i + val2.to_i), "\n";

Whatever site this code came from can be considered untrustworthy. 
Clearly, whoever wrote it doesn't know enough about Ruby to know that 
it's considered poor style to put semicolons at the end of lines.  And 
if they don't know something that basic, what else are they screwing up?

> 
> It actually works! But the this is when I run this, the console doesn't
> show the first print (print "Please enter number 1 : ";) it waits for me
> to place a number, then another number before it shows the print. See
> below:
> 
> 1
> 2
> Please enter number 1 : Please enter number 2 : Answer : 3
> 
> Please help me.

Your console output is probably being buffered by line.  Try putting a 
\n in the string and see if that solves the problem.

> Thank you!
> Nolly

Best,
-- 
Marnen Laibow-Koser
http://www.marnen.org
marnen@marnen.org
-- 
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