Ruby (Programming Language)

Tutorial Title: Ruby (Programming Language)

Course: Web Engineering

Instructor: Muhammad Samim


Note: Copy and paste commands in terminal (irb) after sign >



1. Displaying message and calculating values

• Open terminal by pressing Ctrl + Alt + t
• type irb and press enter now you can apply following Ruby commands
  
• > "Hello Everyone"
• > puts "Hello Everyone"
  
• > 3 + 3
• > 4  * 4
• > 5 ** 6    (** means 5^6)

2. Comments

• # sign is used for comments eg.
• > 20 + 30 # Adding two integers

3. Strings

• For string "" are used e.g
• > "Ruby Language"
• > "" #Empty string

4. Concatenating

• + sign is used for concatenating eg.
• > "Ruby" + "Language"

5. Variables

• Ruby auto detect data type of variables so no need to specify data type for variables
• > b = 4 + 4
• > a = "Any Message"
• > first_name = "Muhammad"
• > last_name = "Samim"
• > first_name + " " + last_name #Displaying first name and last name together.

6. Interpolation (Built in function of Ruby)

• Math.sqrt(99)
• Math.cos(30)

7.

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Muhammad Samim

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