Methods and Functions in C++

• Methods and Functions are Not Same
• All methods are functions, but not all functions are methods.
• Methods can access object-specific data through this. Functions cannot.

Function:

• Function is a standalone block of code that performs a task.
• It Lives in global or namespace scope. It doesn’t have access to class members unless passed explicitly. Called normally:

int add(int a, int b) { return a + b; }

• Method (Member Function)
• Method is a function that is part of a class and can access its data members.
• It Lives inside a class. Each object has its own context (this pointer) pointing to the object’s data. Called via object:

class Calculator {
public:
    int add(int a, int b) { return a + b; }
};