C++ Interview Questions and Answers Last Updated : 18 Sep, 2025 Comments Improve Suggest changes 127 Likes Like Report C++ is one of the most common languages asked about in technical interviews. It is widely used because of its speed, flexibility, and support for both low-level programming and advanced features like OOP and templates.Topic-wise Interview Questions:Basics & Program StructureCore Concepts & Memory HandlingObject-Oriented Programming (OOP) Exception Handling & TemplatesSTL (Standard Template Library)Advanced Topics & Design PatternsRelevant ResourcesTo do well in interviews, you need to understand core syntax, OOP concepts, STL, memory handling, and advanced features. 1. Core Concepts : Arrays, String, Pointers, References, Dynamic Memory (new/delete), Memory Leaks, Shallow vs Deep Copy, Smart Pointers, Object Oriented Programming2. Advanced Topics : Exception Handling, Templates, STL, Multithreading, Lambda Expressions, Move Semantics, Memory Models and Design Patterns (Singleton, Factory, Observer) Create Quiz Comment H harsh_shokeen Follow 127 Improve H harsh_shokeen Follow 127 Improve Article Tags : C++ Interview-Questions Explore C++ BasicsIntroduction to C++3 min readData Types in C++6 min readVariables in C++4 min readOperators in C++9 min readBasic Input / Output in C++2 min readControl flow statements in Programming15+ min readLoops in C++7 min readFunctions in C++8 min readArrays in C++8 min readCore ConceptsPointers and References in C++5 min readnew and delete Operators in C++ For Dynamic Memory5 min readTemplates in C++8 min readStructures, Unions and Enumerations in C++3 min readException Handling in C++12 min readFile Handling in C++8 min readMultithreading in C++8 min readNamespace in C++5 min readOOP in C++Object Oriented Programming in C++8 min readInheritance in C++6 min readPolymorphism in C++5 min readEncapsulation in C++3 min readAbstraction in C++4 min readStandard Template Library(STL)Standard Template Library (STL) in C++3 min readContainers in C++ STL2 min readIterators in C++ STL10 min readC++ STL Algorithm Library3 min readPractice & ProblemsC++ Interview Questions and Answers1 min readC++ Programming Examples4 min read Like