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C++ Frequently Asked Questions

C++ Interview Questions and Answers

C++

Usage and Benefits of std::span in C++20

Posted on: September 21, 2024

C++20 introduced `std::span` for safer array handling. It provides a view over a sequence of elements. This enhances performance by avoiding copies. You can create a `std::span` from […]

C++

How Exception Handling Works in C++

Posted on: September 21, 2024

Exception handling in C++ allows programs to manage errors effectively. It uses keywords like try, catch, and throw. The try block contains code that may throw exceptions. If […]

C++

Difference Between new and malloc() in C++

Posted on: September 21, 2024

In C++, memory allocation can be done using new and malloc(). Both serve to allocate memory, but they work differently. The new operator initializes objects, while malloc() does […]

C++

What Are Inline Functions in C++?

Posted on: September 21, 2024

Inline functions are a feature in C++ that enhances performance. They reduce function call overhead by embedding the code directly. Declaring a function as inline suggests the compiler […]

C++

Deep Copy vs Shallow Copy in C++

Posted on: September 21, 2024

In C++, copying objects can be done in two ways: deep copy and shallow copy. A shallow copy duplicates the object’s immediate values. If the object contains pointers, […]

C++

Difference Between const and constexpr in C++

Posted on: September 21, 2024

In C++, const and constexpr are used for defining constant values. The const keyword declares variables that cannot be modified after initialization. However, the value can be determined […]

C++

Understanding Function Pointers in C++

Posted on: September 21, 2024

Function pointers are a powerful feature in C++. They allow you to store the address of a function. This enables dynamic function calls and enhances flexibility in your […]

C++

Understanding Multiple Inheritance in C++

Posted on: September 21, 2024

Multiple inheritance allows a class to inherit from more than one base class. This feature can enhance code reusability and design flexibility. However, it introduces complexity, especially with […]

C++

Understanding Namespaces in C++

Posted on: September 21, 2024

Namespaces are used in C++ to organize code and avoid name conflicts. They allow you to group related classes, functions, and variables. Using namespaces can significantly improve code […]

C++

Understanding Move Semantics and Rvalue References in C++

Posted on: September 21, 2024

Move semantics is a feature in C++ that optimizes resource management. It allows the transfer of resources from one object to another. Rvalue references enable this by allowing […]

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  • What Is the Difference Between struct and union in C?
  • How Does the sizeof Operator Work in C?
  • What Is the Purpose of the Void Pointer in C?
  • malloc() vs calloc(): Key Differences in C Memory Allocation
  • Understanding the Different Types of Storage Classes in C
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