Method vs function in Programming language

 

The programming languages have two concepts’ functions and methods. functions are defined in structural language and methods are defined in object-oriented language.

Function & Method is a block of code that performs a task. All of these enhance code quality and reusability.

The difference between both is given below:

Method	Function
Methods are defined in object-oriented languages like C#, Java	Functions are defined in structured languages like Pascal,C and object based language like javaScript
Methods are called using instance or object.	Functions are called independently.
Methods do not have independent existence they are always defined with in class.	Functions have independent existence means they can be defined outside of the class.
We can control access using access specifier.	We cannot restrict access
Methods are tied to objects and operate within a class.	Functions are independent, reusable code blocks.
Can access and manipulate object data	Can have parameters and return values
Called using the object’s name and the method name	Called by their name
Often changes the state of an object	Typically stateless
It can be public or private.	Has no visibility control, accessible from anywhere in the code.
Can access and modify the state of an object.	Cannot access or modify the state of an object.
Enables encapsulation and abstraction in object-oriented programming.	Does not support encapsulation or abstraction.
Invoked using the object or class instance followed by the dot operator (.).	Invoked using the function name followed by parentheses ().
It accepts ref variable as input	No ref variable