Access specifier in C++ :
-The access specifiers are used to define how to functions and variables can be accessed outside the class.
-There are three types of access specifiers:
1. Private: Functions and variables declared as private can be accessed only within the same class, and they cannot be accessed outside the class they are declared.
2. Public: Functions and variables declared under public can be accessed from anywhere.
3. Protected: Functions and variables declared as protected cannot be accessed outside the class except a child class. This specifier is generally used in inheritance.
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