C++ General Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

C++ General Interview Questions

Questions Answers Views Company eMail

What is the difference between "calloc" and "malloc"?

ADP,

9 19997

What will happen if I allocate memory using "new" and free it using "free" or allocate sing "calloc" and free it using "delete"?

3 9520

What is the Difference between "printf" and "sprintf"?

iSoft, PentaWare, TCS,

7 47080

What is "map" in STL?

2 8993

When to use Multiple Inheritance?

6 9624

Explain working of printf?

8 23187

Explain about profiling?

1 4743

How many lines of code you have written for a single program?

BoA,

4 12676

How to write Multithreaded applications using C++?

Honeywell, TCS, Wipro,

2 11108

Write any small program that will compile in "C" but not in "C++"?

4 10821

What is Memory Alignment?

TCS,

2 9211

Why preincrement operator is faster than postincrement?

5 16736

What are the techniques you use for debugging?

Adtran,

1 7608

How to reduce a final size of executable?

3 15623

Give 2 examples of a code optimization?

4 14843

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Un-Answered Questions { C++ General }

What is virtual destructor ans explain its use?

1086

What is encapsulation in c++?

1228

What is a breakpoint?

971

Why we use #include iostream in c++?

1011

Write a program to find the Fibonacci series recursively.

1038

Explain container class.

1200

Can we declare a base-class destructor as virtual?

973

What is difference between malloc()/free() and new/delete?

1129

What is a dynamic binding in c++?

919

What is the keyword auto for?

1003

What is function prototyping? What are its advantages?

1041

What is difference between class and function?

1046

Can we make copy constructor private in c++?

1019

What is c++ & why it is used?

1037

Is std :: string immutable?

996

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