C/C++ Job Interview Questions

by D. Lawton Published On 5/20/2011 |

Category: Interviewing

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List below are a few questions that can help you to prepare for your next job C++ job interview. Research these questions thoroughly and secure accurate answers. The questions were compiled to cover some of standard questions raised during technical job inerviews.

What is the output of printf("%d")
What will happen if I say delete this?
What is the difference between "C structure" and "C++ structure".
What is the diffrence between a "assignment operator" and a "copy constructor"
What is the difference between "overloading" and "overridding"?
Explain the need for "Virtual Destructor".
Can we have "Virtual Constructors"?
What are the different types of polymorphism?
What are Virtual Functions? How to implement virtual functions in "C"
What are the different types of Storage classes?
What is Namespace?
What are the types of STL containers?.
What is the difference between "vector" and "array"?
How would you write a program that would delete itself after exectution?
Can we generate a C++ source code from the binary file?
What are inline functions?
What is profiling?
How could you determine how many lines of code you have written for a single program?
What is "stream" ? How would you write Multithreaded applications using C++?
Explain "passing by value", "passing by pointer" and "passing by reference"
Write any small program that will compile in "C" but not in "C++"
Have you heard of "mutable" keyword?
What is a "RTTI"?
Is there something that I can do in C and not in C++?
Why preincrement operator is faster than postincrement?
What is the difference between "calloc" and "malloc"?
What will happen if I allocate memory using "new" and free it using "free" or allocate sing "calloc" and free it using "delete"?
What is Memory Alignment?
What is hte difference between "printf" and "sprintf".
What is "map" in STL?
When shall I use Multiple Inheritance?
What are the techniques you use for debugging?
How would you reduce a final size of an executable?
Give 2 examples of a code optimization.