Top 150 C++ Interview Questions and Answers

STCL stands for Software Test Case Language, a scripting language used for automated testing.

• STCL is used to write test cases for software testing.

• It is a scripting language that allows for automated testing.

• STCL is used to define the steps and expec...read more

The Tc modifier is used to indicate that a service was performed as a component of a larger service.

• The Tc modifier is used for technical components of a service.

• It is used to indicate that a service was performed using equipment owned by the provide...read more

Volatile keyword is used to indicate that a variable's value can be changed unexpectedly.

• Volatile keyword is used in multi-threaded programming to ensure that the value of a variable is always read from memory and not from a cache.

• It is also used in ...read more

Defaulting is the failure to fulfill a financial obligation or debt repayment.

• Defaulting occurs when a borrower fails to make timely payments on a loan or debt.

• It can result in penalties, fees, and damage to the borrower's credit score.

• Examples inclu...read more

Main function is the entry point of a program. It is used to execute the code in the program.

• Main function is required in every program written in C, C++, Java, etc.

• It is the first function to be executed when the program starts.

• It can take command l...read more

Static functions in C/C++ are functions that can only be accessed within the same file they are defined in.

• Static functions are declared using the 'static' keyword.

• They cannot be called using an object or instance of a class.

• They are useful for encap...read more

Preinitialization is the process of initializing data or objects before they are actually needed.

• Preinitialization can improve performance by reducing the time needed to initialize data or objects when they are actually needed.

• It can also help to avo...read more

The #include directive is used to include a file in the source code.

• It allows the programmer to use code from other files in their program.

• The included file is processed by the preprocessor before compilation.

• The syntax is #include or #include "file...read more

New CPS can be included by identifying potential clients, building relationships, and providing value through product knowledge and excellent customer service.

• Identify potential clients through market research and networking

• Build relationships throug...read more

Complete LFT parameter refers to a comprehensive set of liver function tests that assess the overall health and function of the liver.

• Complete LFT parameter includes tests such as ALT, AST, ALP, bilirubin, albumin, and total protein.

• These tests help ...read more

The question is about the common header file in C++.

• The header file is used for input/output operations in C++.

• It provides classes like cin and cout for reading and writing data.

• It also includes classes for file input/output operations like ifstrea...read more

The first declaration creates an array of characters, while the second declaration creates a pointer to a character.

• char a[] = "string"; creates an array of characters with the size determined by the length of the string.

• char *p = "star"; creates a p...read more

Code to find the sum of all even numbers in an array

• Create a variable to store the sum

• Loop through the array and check if each number is even

• If the number is even, add it to the sum variable

• Return the sum variable

Yes, there are multiple ways to work on one type in computer operations.

• Using different programming languages

• Using different software tools

• Using different algorithms or approaches

• Using different hardware configurations

CNC programming is the process of creating instructions for a computer-controlled machine to perform specific tasks.

• CNC stands for Computer Numerical Control

• Programs are created using CAM software

• Instructions are written in G-code

• Used in manufacturin...read more

Write code to remove number character before hash based on count of hash

• Count the number of hashes in the input string

• Loop through the string and remove the character before the hash based on the count of hashes

• Return the modified string

A modifier is a word or phrase that describes or changes the meaning of another word or phrase in a sentence.

• Modifiers can be adjectives, adverbs, or phrases.

• They provide additional information about the subject, verb, or object in a sentence.

• Example...read more

The virtual keyword is used in C++ for creating virtual functions and implementing polymorphism.

• Used to create virtual functions that can be overridden by derived classes

• Allows for dynamic binding of functions at runtime

• Used in implementing polymorph...read more

Implementing addition without using the + sign.

• Use bitwise operators like XOR and AND to perform addition.

• Convert the numbers to binary and perform addition bit by bit.

• Use recursion to add the numbers.

• Use a lookup table to perform addition.

• Use the Ma...read more

Program to find the missing number from an array of integers.

• Create an array of integers with the given values.

• Loop through the array and check for missing numbers.

• Print the missing numbers.

• Alternatively, use mathematical formula to find the missing ...read more

Code to print the first 10 even numbers starting from 2

• Use a loop to iterate through the numbers

• Check if the number is even using the modulo operator

• Print the number if it is even and increment the count

• Stop the loop once 10 even numbers have been pr...read more

The new operator is used to dynamically allocate memory for an object at runtime.

• It returns a pointer to the newly allocated memory.

• It can be used to allocate memory for built-in types, user-defined types, and arrays.

• The syntax is: new type;

• Example: ...read more

VCB stands for Vacuum Circuit Breaker, which is an electrical switch that uses vacuum as the dielectric medium.

• VCB is used to protect electrical equipment from damage caused by overcurrents and short circuits.

• It is commonly used in high voltage power...read more

The program prints a pattern of alternating 1s and 0s in a specific sequence.

• Use a loop to iterate through the given sequence of numbers

• Inside the loop, check the length of each number and print the corresponding pattern of 1s and 0s

• Repeat the patter...read more

CAS stands for Columnstore Archive Storage in Azure SQL Database.

• CAS is a storage tier in Azure SQL Database that is optimized for cold data storage.

• It is designed to store large amounts of data that is infrequently accessed.

• CAS uses columnstore inde...read more

Initializer list is a syntax in C++ to initialize objects with a list of values.

• Initializer list is enclosed in curly braces {}.

• It can be used to initialize arrays, structs, and classes.

• Example: int arr[] = {1, 2, 3};

• Example: struct Point { int x, y;...read more

The new keyword in C++ is used to dynamically allocate memory for an object or array.

• Used to create objects on the heap: MyClass* obj = new MyClass();

• Used to create arrays on the heap: int* arr = new int[10];