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

STL (140)
OOPS (873)
C++ General (2409)

C++ Interview Questions

Questions Answers Views Company eMail

What is a "RTTI"?

HCL,

6 12971

Is there something that we can do in C and not in C++?

Patni,

14 22233

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

ADP,

9 20630

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

3 9777

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

iSoft, PentaWare, TCS,

7 47671

What is "map" in STL?

2 9210

When to use Multiple Inheritance?

6 10044

Explain working of printf?

8 23794

Explain about profiling?

1 4913

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

BoA,

4 12999

How to write Multithreaded applications using C++?

Honeywell, TCS, Wipro,

2 11305

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

4 11122

What is Memory Alignment?

TCS,

2 9420

Why preincrement operator is faster than postincrement?

5 17138

What are the techniques you use for debugging?

Adtran,

1 7769

Un-Answered Questions { C++ }

What is the use of map in c++?

1198

Can you use the function fprintf() to display the output on the screen?

1302

Out of fgets() and gets() which function is safe to use and why?

1243

what is software cycle? What is a mission critical system ? What is the important aspect of a real-time system ? Explain the difference between microkernel and macro kernel. Give an example of microkernel.Why paging is used ? Which is the best page replacement algo and Why ? What is software life cycle ? How much time is spent usually in each phases and why Which one do U want to work if selected in Honeywell ? Which are the different types of testing ? What is a distributed system ? Some questions about CSP. Which languages do U know ? What are the differences between Pascal and C. questions from Compiler construction and Lisp. Which are the different computer architecture? What is the requirement in MIMD ? What is the difference between RISC and CISC processors ? Difference between loosely coupled and tightly coupled systems ? What is an open system?

2279

Write bites in Turbo c++ Header ("Include") Files.

1338

Assume studentNames and studentIDs are two parallel arrays of size N that hold student data. Write a pseudocode algorithm that sorts studentIDs array in ascending ID number order such that the two arrays remain parallel.

2272

What do you mean by delegate? Can a user retain delegates?

1002

Should the this pointer can be used in the constructor?

1079

What is the use of typedef?

1151

Write about the local class and mention its use?

1139

Difference between class and structure.

1227

How does java differ from c and c++?

1044

Evaluate the following expression as C++ would do :8 * 9 + 2 * 5 a) 82 b) 79 c) 370 d) list

1061

What are the three forms of cin.get() and what are their differences?

1325

What is class and object with example?

1227

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