C Interview Questions

5,479 c interview questions shared by candidates

ienumerable vs ienumerator? Singleton pros and cons? Factory pattern vs DI? Struct vs Class Interface What is dll and why to use it? What is generic method? What is IOC? What is Race conditions? What is deadlock in Thread? Generic method to convert array of class to array of another class.
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Senior Software Engineer, C#/.NET

Interviewed at Age of Learning

3.9
Oct 17, 2019

ienumerable vs ienumerator? Singleton pros and cons? Factory pattern vs DI? Struct vs Class Interface What is dll and why to use it? What is generic method? What is IOC? What is Race conditions? What is deadlock in Thread? Generic method to convert array of class to array of another class.

What is OOP, and explain each parts? Explain garbage collection. What does SDLC stands for and explain each parts. What is agile and waterfall? What are some features of C#? What is CRM? What does IDE stands for? What is JavaScript? What is ASP.NET? This was for an entry level role.
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C#.NET Applications Developer

Interviewed at IBM

3.9
Feb 24, 2018

What is OOP, and explain each parts? Explain garbage collection. What does SDLC stands for and explain each parts. What is agile and waterfall? What are some features of C#? What is CRM? What does IDE stands for? What is JavaScript? What is ASP.NET? This was for an entry level role.

-Briefly explain your work experience -rate yourself in C++ expertise -OOPS concepts -shallow v/s deep copy -what is malloc -malloc v/s new -Compare Union, Structure, Class -Access specifiers -what is the default access specifier in a class -Types of constructors -how a copy constructor works -what are provided by default in a class (constructor,...) -Can a constructor be private -Purpose of singleton class -Friend class & function -virtual class & function -Sizeof( class A{} ) -How to find number of objects created so far -static member -what are vectors -data structures -did you have to create & implement any data structure -Linux/Scripting -how to list hidden files -how to find a file -touch command -what happens if touch is used on existing file -vtable -are you familiar with debugging tools like GDB -are you familiar with versioning tools like git
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C++ Developer

Interviewed at IBM

3.9
May 22, 2021

-Briefly explain your work experience -rate yourself in C++ expertise -OOPS concepts -shallow v/s deep copy -what is malloc -malloc v/s new -Compare Union, Structure, Class -Access specifiers -what is the default access specifier in a class -Types of constructors -how a copy constructor works -what are provided by default in a class (constructor,...) -Can a constructor be private -Purpose of singleton class -Friend class & function -virtual class & function -Sizeof( class A{} ) -How to find number of objects created so far -static member -what are vectors -data structures -did you have to create & implement any data structure -Linux/Scripting -how to list hidden files -how to find a file -touch command -what happens if touch is used on existing file -vtable -are you familiar with debugging tools like GDB -are you familiar with versioning tools like git

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