Learn Ruby easily I

Ruby is an gr8(great) language, it is simple and really easy for beginners to understand,unfortunately if you have programmed in C, C++ or Java , you will find it hard to grasp.

If you do not have Ruby , get it from rubyinstaller.org.


Ruby is a complexly simple language.

Check out here on how to set up ruby in Windows.

How to run Ruby Programs?

In the command prompt type
ruby [ur_program_name].rb

How is ruby different from other Languages?

• It is freely typed , meaning no need int a; or stuff like that just get to the point e.g:-a=5 is valid in ruby so it is a freely typed language.C,C++,Java is NOT
• No brackets for declaring methods, classes  , just def and end statement, i will show their use later.It seriously reduces clutter
• It is interpreted rather than being compiled , it has both advantages and disadvantages.C,C++,Java[an hybrid] are compiled.Lua,Perl,Python[hybrid] are interpreted.
• Remeber Ruby IS NOT C or Java.It is distinct
• Everything are objects
• Automatic garbage disposal like Java . C++ and Delphi do not have Garbage Disposal 
• More Simple Syntax

That's enough of features , let's start.

Open Notepad++ or notepad.

type:

puts ("I am learning Ruby Hello World!!!!!!!")

Save it as HelloWorld.rb and run it ruby HelloWorld.rb

It will show the following output.

I am learning Ruby Hello World!!!!!!!

Now let's do some calculations

code:

num = 3

num2 = 4

num3=num+num2

print (num3)

This will show the following output.

7

Remember for Java and C programmers!

no int but it is freely assigned.no ; at the end of a statement.

That's all for this tutorial Look out for Tut II

[*]Tutorial II is out go now!

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