To complete any set of tasks in Ruby or to write a specific set of expressions (this can be for calculating the percentage of a number or adding for two numbers), We use the method, the method provides a value after performing its specific function which we write in the form of expression inside it, we use def command (def add or def percent) to create any method in Ruby and we can pass the argument. In this method, after the method name, such as (def add (a, b)), After writing all the expressions, we have to finish the method by writing the last one below the method.

Below is the syntax of the method and from the following syntax we will discuss a little step by step how the method works in Ruby: 

When we write code def and method name means we are instructing the system about the method, the system takes it as an instruction to define a method. 

We are passing the parameter after the name of the method, here the parameter can be on or more like the example of a def method (a, b, c). So we are instructing the system about the number of parameters. 

The next thing we're going to do is perform some activity inside the function, this activity could be something like addition, multiplication, or any other mathematical or logical calculation. 

At the end of the method expression, whatever we write will be returned, so there is no need to return anything manually. 

And the step to close the method, for this we use the end command at the end of the method. Once you read the last of the Ruby compilers you will realize that this is the end of the method.

Finally, when it comes time to call the method we have defined here, we only use the method name to call the method and by doing so we are only calling the address where the method is available and it will perform all related activities. 

 #Start of the method with parameters deffmethodd examplee (parameters)
#Here we perform the operation or the task which we needed   #No need to return anything as in it default return thelasts  line of the expression 
end
#Calling of the method method examp leemethodexamplee 
  

We will use the def command here to define any method, there can be two types of methods one is a normal method and the other is a class-based method. 

Here in the example below, we are working in a way that does not belong to any class and they are not getting any param or argument in the method call. We can illustrate the following example in the following steps. We have defined a method without any parameters and inside the method, we are printing some messages for the general public. In the next step, we call this method by the name we have defined. Once we call the method by its name it will print all the messages and once the last command is read it will close the method. See the example below along with a screen of output. 

 defgreeting for alll
puts "Welcome to all of in the Rubyprogrammingg world"
puts "This example is for the method without params and class"
endgreeting for alll 

Here in the example below, we are working on a method that belongs to the student class and they are not getting param or argument in the method call. We can illustrate the following example in the following steps: 

We have defined a class with the name of the student. Inside the classroom, we have defined a method without any param and inside the method, we are printing some messages for the general public. In the next step, we are calling this method with objects made from student class (good luck to all). Once we call the method by its name it will print all the messages and once the last command is read it will stop the method. See the example below along with a screen of output.

 class Student
defgreeting for alll
puts "Welcome to all of in the Rubyprogrammingg world"
puts "This example is for the method without params and class"
end
endstudent objectc =Studentnew studentt objectcgreetingfor alll 
  

 
How to define a method with parameters? 

Here in the example below, we are working in a way that does not belong to any class and it is getting param or argument in the method call. We can illustrate the following example in the following steps:

We have defined a method with some params and inside the procedure, we are printing some messages for the details of the students who have passed in the form of params. In the next step, we are calling the method by the name that we have defined and passing the required parameters in it. Once we call the method by name it will print all the messages related to a particular student passed in param form and once read the last command it will close the method. See the example below along with a screen of output.

Code:

 def greetingForAll (name ,designation)
puts "Welcome to organisation mr #{name} you are working here as #{designation}"
end
greetingForAll("ranjan","Software Engineer")
greetingForAll("Ajat","Civil Engineer") 
 
  

2. Procedures including classes and params 

Here in the example below, we are working on the method that belongs to the student class and it is getting param or argument in the method call. We can illustrate the following example in the following steps:

We have defined a class with the name of the student. Inside the classroom, we have defined a method with some parameters as student information. In the next step, we are calling this method with objects made from student class (greetings for all (suggestions)). Once we call the method by the name of the object we created it will print all the messages related to the param passed to the student. See the example below along with a screen of output. 

 class Student
def greetingForAll (name ,designation)
puts "Welcome to organisation mr #{name} you are working here as #{designation}"
end
end
studentObject = Student.new
studentObject.greetingForAll("ranjan","Software Engineer")
studentObject.greetingForAll("Ajat","Civil Engineer")  

From this tutorial we have learned about the concept of method in Ruby, we have learned about different types of methods used in a method like with Ruby, with class, and without class without Ruby, we have also given a little focus on work and practical steps for the method.

A method is a collection of statements that perform certain tasks and provide results. Methods allow the user to reuse the code without having to retype the code. The methods are time-saving and help 

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