wtd, ruby questions

[wtd]

Is it really "greet.rb", or did it get saved as "greet.rb.txt"?

[dsantamassino]

wtd wrote:

Is it really "greet.rb", or did it get saved as "greet.rb.txt"?

No i just looked. Its really on my root C: and its named greet.rb

so i tried greet.rb and ruby greet.rb both in the command and still nothing. Its doesnt recognize for some reason

[wtd]

Ok... not gonna give up on this.

Try "type greet.rb" at the command-line. The Windows command prompt, not the IRB prompt.

[dsantamassino]

wtd wrote:

Ok... not gonna give up on this.

Try "type greet.rb" at the command-line. The Windows command prompt, not the IRB prompt.

I tried at the C: command line both as followed and nothing

type greet.rb
"type greet.rb"

exactly both ways with quotes and without.....

[wtd]

Ok, let's try a different approach... instead of using Notepad or Textpad... for now we'll just used the built-in edit program.

At the command-line, enter:

code:

C:\> edit greet.rb

You'll see a blue editor screen. Here you can type in the program again, unless it's already there.

code:

puts "Your name is?" name = gets puts "Hello, " + name + "!"

You can use Alt-F-S to save, and Alt-F-X to exit.

Then to run it:

code:

C:\> ruby greet.rb

[dsantamassino]

ok.. here is a different error message down below..

greet.rb:3: syntax error
puts "Hello, " + Derek "!"

[wtd]

dsantamassino wrote:

ok.. here is a different error message down below..

greet.rb:3: syntax error
puts "Hello, " + Derek "!"

Cool.

You're missing a + between Derek and "!".

The name of the variable should also be "name".

[dsantamassino]

wtd wrote:

dsantamassino wrote:

ok.. here is a different error message down below..

greet.rb:3: syntax error
puts "Hello, " + Derek "!"

Cool.

You're missing a + between Derek and "!".

The name of the variable should also be "name".

Cool it worked.
Derek?

[wtd]

Spiffy.

Now, do you understand why the program went something like:

code:

C:\> ruby greet.rb And your name is? Derek Hello, Derek ! C:\>

When it should have looked like:

code:

C:\> ruby greet.rb And your name is? Derek Hello, Derek! C:\>

[dsantamassino]

wtd wrote:

Spiffy.

Now, do you understand why the program went something like:

code:

C:\> ruby greet.rb And your name is? Derek Hello, Derek ! C:\>

When it should have looked like:

code:

C:\> ruby greet.rb And your name is? Derek Hello, Derek! C:\>

No i dont know. May u explain it to me??

[wtd]

Sure.

When you call "gets" to get input from the user, you get all of their input, including the return key.

Then, then you use "puts" to output, you get that return again.

The key is to use another method named "chomp" to remove the return from the end of that string.

code:

puts "And your name is?" name = gets.chomp puts "Hello, " + name + "!"

[dsantamassino]

wtd wrote:

Sure.

When you call "gets" to get input from the user, you get all of their input, including the return key.

Then, then you use "puts" to output, you get that return again.

The key is to use another method named "chomp" to remove the return from the end of that string.

code:

puts "And your name is?" name = gets.chomp puts "Hello, " + name + "!"

Oh ok i think i got it

[wtd]

An exercise, shamelessly stolen from Chris Pine:

Write a program which asks for a person's first name, then middle, then last. Finally, it should greet the person using their full name.

[dsantamassino]

I tired to do it but its pointed an upward error to the middle name

[wtd]

Post the code you write. Please surround it with code tags, like so:

code:

[code]This is formatted as code.[/code]