C Developer Interview Questions

5,475 c developer interview questions shared by candidates

1. Introduction 2.Prefered language (i mentioned Java) 3.Pillars of OOPS with real time examples 4.Varaiables 5.Types of Methods 6.About SQL 7.Joins(given two tables and asked to write the output) 8. constraints in dbms 9. Primary Key 10. DML 11. Time and work question
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Gen C

Interviewed at Cognizant

3.9
Nov 29, 2024

1. Introduction 2.Prefered language (i mentioned Java) 3.Pillars of OOPS with real time examples 4.Varaiables 5.Types of Methods 6.About SQL 7.Joins(given two tables and asked to write the output) 8. constraints in dbms 9. Primary Key 10. DML 11. Time and work question

2. Technical Round Introduction and Project Discussion Topics Covered: C++: Vectors (storage, limit, syntax) Pointers & Reference Variables Array pointers: creation & destruction new and delete operators Virtual Functions, Polymorphism Virtual Destructor (GFG output prediction) Virtual Tables & v-pointers (definition) DSA Question: Check if a Linked List is a Palindrome Interview was very helpful, with guidance and corrections provided throughout.
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C++ Developer

Interviewed at Accelya Group

3.4
Jun 12, 2025

2. Technical Round Introduction and Project Discussion Topics Covered: C++: Vectors (storage, limit, syntax) Pointers & Reference Variables Array pointers: creation & destruction new and delete operators Virtual Functions, Polymorphism Virtual Destructor (GFG output prediction) Virtual Tables & v-pointers (definition) DSA Question: Check if a Linked List is a Palindrome Interview was very helpful, with guidance and corrections provided throughout.

1. Sort array with ones and zeros. This was the most "complicated" part. 2. Complexity of insert/delete/find in double linked list, binary tree. Complexity of sort of array of numbers, of sorted array of numbers. 3. Questions like what order ctors/dtors work. 4. Some crap with 2 classes having static shared ptr for kernel object, where kernel was class poorly written. Like what's wrong with the code was the question. 5. int x; int &j; j=x; What's wrong? Reference should be assigned to a variable when declared actually. Other questions very primitive.
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Senior Software Developer C++

Interviewed at Scalable Solutions

3.8
Feb 19, 2021

1. Sort array with ones and zeros. This was the most "complicated" part. 2. Complexity of insert/delete/find in double linked list, binary tree. Complexity of sort of array of numbers, of sorted array of numbers. 3. Questions like what order ctors/dtors work. 4. Some crap with 2 classes having static shared ptr for kernel object, where kernel was class poorly written. Like what's wrong with the code was the question. 5. int x; int &j; j=x; What's wrong? Reference should be assigned to a variable when declared actually. Other questions very primitive.

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