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 20305

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

3 9628

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

iSoft, PentaWare, TCS,

7 47366

What is "map" in STL?

2 9091

When to use Multiple Inheritance?

6 9829

Explain working of printf?

8 23477

Explain about profiling?

1 4818

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

BoA,

4 12835

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 10971

What is Memory Alignment?

TCS,

2 9312

Why preincrement operator is faster than postincrement?

5 16933

What are the techniques you use for debugging?

Adtran,

1 7694

How to reduce a final size of executable?

3 15804

Give 2 examples of a code optimization?

4 15015

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Un-Answered Questions { C++ General }

Can we get the value of ios format flags?

1141

Explain the concept of friend function in c++?

1118

What are punctuators in c++?

1164

How do c++ struct differs from the c++ class?

1200

What does new return if there is insufficient memory to make your new object?

1039

Please explain class & object in c++?

1095

Why is standard template library used?

1056

How is objective c different from c++?

1255

Explain class invariant.

1066

What is a storage class? Mention the storage classes in c++.

1026

What is a literal in c++?

1105

What is format for defining a structure?

1086

How do you generate a random number in c++?

1103

When should you use global variables?

1215

What is an inline function in c++?

1116

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