TCS Servicenow Developer Interview Questions, Process, and Tips for Experienced

An object in C++ is a self-contained entity that consists of data and functions to manipulate that data.

• Objects are instances of classes in C++

• Objects can have attributes (data members) and methods (member functions)

• Objects can be created dynamically using the 'new' keyword

• Example: class Car { int speed; void accelerate(); }; Car myCar;

A function is a block of code that performs a specific task. A function call is when the function is executed.

• Functions are reusable blocks of code that can be called multiple times in a program.

• Function calls involve providing the function name followed by parentheses, which may contain arguments.

• Functions can return values or perform actions without returning a value.

Inheritance in C++ allows a class to inherit properties and behaviors from another class.

• Allows a class to inherit properties and behaviors from another class

• Derived class can access all public and protected members of the base class

• Supports single and multiple inheritance

• Example: class Car inherits from class Vehicle

C language has 5 basic data types: int, float, double, char, and void.

• int - used for integer values (e.g. 5, -10)

• float - used for floating-point values (e.g. 3.14, -0.5)

• double - used for double-precision floating-point values (e.g. 3.14159, -0.12345)

• char - used for single characters (e.g. 'a', 'B')

• void - used to indicate that a function does not return a value

OPP stands for Object-oriented Programming. It is a programming paradigm based on the concept of objects.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Ability of a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing on