Update Ruby_Variables.md

Ruby_Variables.md

@@ -2,102 +2,74 @@
 
 There are 4 types of fundamental variables in ruby
 
-1.-Global variables:
+### 1. Global variables:
 
-Global variables begin with $, 
-Uninitialized instance variables have the value nil 
-and produce warnings
+Global variables begin with `$`. Uninitialized instance variables have the value `nil` and produce warnings.
 
+```ruby
+$global_variable = 10
+puts "Global variable is $global_variable"
+```
 
-	$global_variable = 10
-	puts "Global variable is $global_variable"
+### 2. Instance Variables:
 
+An instance variable has a name that begins with `@` and its scope is limited to the object to which reference self.
 
-2.-Instance Variables:
-
-An instance variable has a name that begins with @ and its scope is 
-limited to the object to which reference self
-
-
-Two different objects, even when they belong to the same class, can have different values ​​in their instance variables
-
-	class Test
-
-	    	def set_example (n)
-
-			@example = n
+Two different objects, even when they belong to the same class, can have different values in their instance variables.
 
+```ruby
+class Test
+	def set_example (n)
+		@example = n
 	   	end
-
-	    	def set_example2 (n)
-
-	       	 @example2 = n
-
+
+    def set_example2 (n)
+		@example2 = n
 	   	end
+    end
+```
 
-	end
-
-
-
-3.-Ruby Class Variables:
-
-Class variables begin with @@ and must be initialized 
-before they can be used in method definitions.
-
-
-Referencing an uninitialized class variable produces an error. Class variables are shared 
-among descendants of the class or module in which the class variables are defined.
-
+### 3. Ruby Class Variables:
 
-Overriding class variables produce warnings
+Class variables begin with `@@` and must be initialized before they can be used in method definitions.
 
+Referencing an uninitialized class variable produces an error. Class variables are shared among descendants of the class or module in which the class variables are defined.
 
-	class Workers
-
-	    @@number_of_workers = 0
-
-	    def initialize (name, id)
+Overriding class variables produce warnings.
 
+```ruby
+class Workers
+	@@number_of_workers = 0
+
+	def initialize (name, id)
 		@cust_name = name
 		@cust_id = id
-
 	    end
 
-	    def display_details()
-
+	def display_details()
 	    puts "Worker id #@cust_id"
 	    puts "Worker name #@cust_name"
-
 	    end
 
-
-	    def total_workers()
-
+	def total_workers()
 	    @@number_of_workers += 1
 	    puts "Total is: #@@number_of_workers"
-
 	    end
-
 	end
+```
 
+### 4. Ruby constants:
 
-4.-Ruby constants:
-
-
-Constants begin with an uppercase letter. Constants defined within a class or module can be accessed from within that class or module, and those defined outside 
-a class or module can be accessed globally.
-
+Constants begin with an uppercase letter. Constants defined within a class or module can be accessed from within that class or module, and those defined outside a class or module can be accessed globally.
 
-	class Example
-
-	    VAR1 = 100
-	    VAR2 = 200
-
-	    def show
-
-	       puts "Value of first Constant is #{VAR1}"
-	       puts "Value of second Constant is #{VAR2}"
+```ruby
+class Example
+	VAR1 = 100
+	VAR2 = 200
 
+	def show
+		puts "Value of first Constant is #{VAR1}"
+		puts "Value of second Constant is #{VAR2}"
 	    end
-
 	 end
+```