Note: Ruby Windows Installer Pack please go to http://rubyinstaller.org/download installation.
Installed a Ruby193, wrote the first Ruby program, to record their own learning bit.
First in Ruby's new folder, sample, and then add a new file, name helloworld.rb
Content is:
Copy Code code as follows:
Of course, you can declare a variable first, such as a puts statement
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A = "hello,world!"
Puts a
Of course, you can also write a function, then call, let it output.
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def say (name)
"Hello,#{name}"
End
Puts say ("world!")
Given that Ruby is completely object-oriented, you can also write a class, and then tune the object in the class to complete.
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Class Hello
Attr_reader:msg
DEF initialize
@msg = "Hello, World"
End
End
H = hello.new
Puts H.msg
Print "Press RETURN"
$stdin. Gets
Operation mode, as follows:
Copy Code code as follows:
C:\ruby193\sample>ruby helloworld.rb
Hello, world!.
