Deloitte Software Engineer Interview Questions and Answers

printf() and scanf() are used for input/output operations in C programming language.

• printf() is used to print output on the console or terminal.

• scanf() is used to take input from the user.

• printf() and scanf() are part of the standard input/output library in C.

• printf() uses format specifiers to format the output.

• scanf() uses format specifiers to read input from the user.

Static variables and functions are those that retain their values throughout the program's execution.

• Static variables are declared with the 'static' keyword and are initialized only once.

• Static functions are also declared with the 'static' keyword and can only be called within the same file.

• Static variables and functions have a global scope within the file they are declared in.

• Examples of static variables include ...read more

A nested structure is a data structure that contains other data structures within it.

• It is a way of organizing data in a hierarchical manner.

• It can be used in programming languages like C, Java, and Python.

• Examples include arrays of structures, structures containing arrays, and structures containing other structures.

• It can be used to represent complex data such as trees and graphs.

Encapsulation is the process of hiding implementation details and providing a public interface for accessing the object.

• Encapsulation helps in achieving data abstraction and information hiding.

• It prevents unauthorized access to the internal state of an object.

• It allows for better control over the data and its behavior.

• Example: A bank account class with private variables for balance and account number, and public m...read more

Operator overloading allows operators to have different meanings based on the operands they work on.

• It allows operators to be used with user-defined data types

• It can simplify code and make it more readable

• Examples include using the + operator to concatenate strings or add numbers

• Operators can be overloaded for unary and binary operations

OOP is a programming paradigm based on objects, encapsulating data and behavior for modular and reusable code.

• Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).

• Inheritance: Mechanism to create a new class using properties and methods of an existing class (e.g., a 'Dog' class inheriting from an 'Animal' class).

• Polymorphism: Ability to present the same interface for di...read more