C++ at TCCI Tccicomputercoaching.com

C++ at TCCI

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C++ is an object oriented programming language created by BjarneStroustrup. It is released in 1985.

C++ doesn't only maintains all aspects from C language, it also simplify memory management and add several features like:

Includes a new data type known as a class.

Allows object oriented programming.

C And  C++

C follows the procedural style programming.

C++ is multi-paradigm. It supports both procedural and object oriented.

Data is less secured in C.
In C++, you can use modifiers for class members to make it inaccessible for outside users.

C follows the top-down approach.

C++ follows the bottom-up approach

C does not support function overloading.

C++ supports function overloading

In C, you can't use functions in structure.

In C++, you can use functions in structure

C does not support reference variables.

C++ supports reference variables

In C, scanf() and printf() are mainly used for input/output.

C++ mainly uses stream cin and cout to perform input and output operations.

Class is a user-defined data type. Class defines the type definition of category of things. It defines a data type, but it does not define the data it just specifies the structure of data.

You can create N number of objects from a class.

Object is the instance of a class. A class provides a blueprint for objects. So you can create an object from a class. The objects of a class are declared with the same sort of declaration that we declare variables of basic types.

There are three types of access specifiers:

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.

Public: Functions and variables declared under public can be accessed from anywhere.

Encapsulation: Encapsulation is a mechanism which binds the data and associated operations together and thus hide the data from outside world. Encapsulation is also known as data hiding. In C++, It is achieved using the access specifies i.e. public, private and protected.

Abstraction: Abstraction is used to hide the internal implementations and show only the necessary details to the outer world. Data abstraction is implemented using interfaces and abstract classes in C++.

Some people confused about Encapsulation and abstraction. But they both are different.

Inheritance: Inheritance is used to inherit the property of one class into another class. It facilitates you to define one class in term of another class

Protected: Functions and variables declared as protected cannot be accessed outside the class except a child class. This specified is generally used in inheritance.

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