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 20299

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

3 9627

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

iSoft, PentaWare, TCS,

7 47361

What is "map" in STL?

2 9091

When to use Multiple Inheritance?

6 9824

Explain working of printf?

8 23474

Explain about profiling?

1 4816

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

BoA,

4 12833

How to write Multithreaded applications using C++?

Honeywell, TCS, Wipro,

2 11202

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

4 10964

What is Memory Alignment?

TCS,

2 9312

Why preincrement operator is faster than postincrement?

5 16931

What are the techniques you use for debugging?

Adtran,

1 7693

How to reduce a final size of executable?

3 15799

Give 2 examples of a code optimization?

4 15013

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Un-Answered Questions { C++ General }

Where is atoi defined?

1144

What is a stack? How it can be implemented?

1169

What is the real purpose of class – to export data?

1113

Write a program to interchange 2 variables without using the third one.

1058

What is format for defining a structure?

1086

What are the uses of static class data?

1187

What do manipulators do?

1016

Do you know about C++ 11 standard?

1090

Is c or c++ more useful?

1052

Is set c++?

1003

Explain linked list using c++ with an example?

1086

What is the difference between structures and unions?

1064

Explain the difference between c++ and java.

1114

Incase of a function declaration, what is extern means?

975

Write about the use of the virtual destructor?

1009

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