A Program ending command

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July 13th, 2010, 01:57 PM

doomxorz

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A Program ending command

Hello, I am new to ruby and programming in general and just need a bit of help.

Basically all i need is to know if there is a single command that will end the program. for example...

puts 'End program? (Y/N)'
cmd = gets.chomp
if cmd.downcase = 'y'
<command I need that ends the program>
end
if cmd.downcase = 'n'
puts 'You chose to not to end the program.'
end

<program continues>

Hmmm i guess that makes sense...
Any help would be appreciated! =)

July 13th, 2010, 03:47 PM

L7Sqr

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You are looking for the exit call. See example below.

Code:

#!/usr/bin/env ruby


print ("Kill myself? ");
$stdout.flush

case gets.chomp
when /^y/i
    exit 0
else
    puts "Yay!"
end

puts "Still not dead"

Comments on this post

delnan disagrees: No sure whether to agree or not - seriosuly, a regex for one damned letter?!?

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July 13th, 2010, 06:32 PM

L7Sqr

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@delnan:

The regex handles the class of inputs that begin with the letter y in a case insensitive way. You know: Yes, yeah, y, yuppers, yesterday, Yummy.

Perhaps something along the lines of

Code:

exit unless getc != 121

would have been better?

I figured something the OP could digest and play with would be appropriate. Although, I do see the traces of a context switch in there: parenthesis and a semicolon. *shudders*

Last edited by L7Sqr : July 13th, 2010 at 06:35 PM.

July 13th, 2010, 11:56 PM

doomxorz

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ok, thankee very much! =)

July 14th, 2010, 05:23 AM

delnan

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Quote:

The regex handles the class of inputs that begin with the letter y in a case insensitive way. You know: Yes, yeah, y, yuppers, yesterday, Yummy.

Yeah, I know. But if it asks for 'y' or 'n', I feel like it should only accept these - case insensetively of course - and not treat "yikes" as 'y'.
The OP's solution on that is good if you ask me - accepts both 'y' and 'Y' and treats everything else as 'n' - perfectly simple semantics.

A Program ending command

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