C++ and Object-Oriented Programming Fundamentals

This set covers the basic concepts of Object-Oriented Programming (OOP), the structure of C++ programs, data types, operators, and access specifiers as detailed in the lecture notes.

What is Object-Oriented Programming (OOP) based on?

OOP is based on the concept of "objects," which contain data and methods to manipulate that data.

What are the key benefits of OOP compared to procedural programming?

OOP focuses on binding data and functions together to improve security and code reusability.

How is a 'Class' defined in OOP?

A class is a user-defined blueprint or template from which objects are created.

What is an 'Object' in the context of OOP?

An object is an instance of a class that has a state and behavior.

What is the primary purpose of Encapsulation?

Wrapping data and methods together into a single unit to prevent direct external access.

Define 'Abstraction' in OOP.

Hiding complex internal background details and showing only essential features to the user.

What is 'Inheritance'?

The mechanism by which one class acquires the properties and behaviors of another class.

What are the four major sections generally found in a C++ program?

1. Documentation Section, 2. Header Files/Preprocessor Directives, 3. Class Definition/Global Declarations, 4. Main Function.

What is the purpose of the Documentation Section in C++?

It consists of comments describing the program.

At what point does execution start in a C++ program?

Execution starts from the main function.

What are 'User-Defined Data Types'?

Types defined by the programmer according to their needs, such as Class, Structure, and Union.

Distinguish between a 'Structure' and a 'Union' in C++.

A Structure is a collection of variables of different data types under a single name, while a Union is similar but all members share the same memory location.

What are 'Derived Data Types'?

Types derived from basic or built-in data types, including Array, Pointer, and Function.

How is an 'Array' defined in C++?

A collection of elements of the same data type stored in contiguous memory locations.

What is a 'Pointer'?

A variable that stores the memory address of another variable.

What are the seven types of operators listed in C++?

1. Arithmetic, 2. Relational, 3. Logical, 4. Assignment, 5. Increment & Decrement, 6. Bitwise, 7. Conditional.

What is the function of the Scope Resolution Operator ($::$)?

It is used to access a global variable when a local variable with the same name exists in a block, or to define a member function outside a class.

What is the core difference between POP and OOP in terms of data handling?

Procedure Oriented Programming (POP) works with functions only and has no security for data, while OOP combines data and functions into objects and provides security via specifiers.

What happens when a member is declared as 'Private'?

Members can only be accessed within the same class; by default, all members in a C++ class are private.

Define the accessibility of 'Protected' members.

Members are accessible within the same class and by derived classes through inheritance, but not directly from the outside.

What is the accessibility of 'Public' members?

Members declared as public are accessible from anywhere in the program.

What is the purpose of the 'Definition Section' in C++ structure?

This section is used to define constants or macros, such as #define PI 3.14.

What is the 'Link Section' in a C++ program?

This section includes header files using #include, such as #include .

What is the 'Sub Program' section?

This section contains user-defined functions other than the $main()$ function.