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C++ General Interview Questions
Questions Answers Views Company eMail

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

ADP,

9 13748

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

3 7150

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

iSoft, PentaWare, TCS,

7 42330

What is "map" in STL?

2 7274

When to use Multiple Inheritance?

6 6033

Explain working of printf?

8 18197

Explain about profiling?

1 3425

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

BoA,

4 10067

How to write Multithreaded applications using C++?

Honeywell, TCS, Wipro,

2 8650

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

4 8545

What is Memory Alignment?

TCS,

2 6960

Why preincrement operator is faster than postincrement?

5 13782

What are the techniques you use for debugging?

Adtran,

1 6192

How to reduce a final size of executable?

3 12660

Give 2 examples of a code optimization?

4 12055


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Un-Answered Questions { C++ General }

What is the array and initializing arrays in c++?

140


What is a virtual destructor? Explain the use of it?

177


Differentiate between structure and class in c++.

179


What is an overflow error?

191


How are the features of c++ different from c?

192






Explain the use of virtual destructor?

189


Should the this pointer can be used in the constructor?

181


Do the names of parameters have to agree in the prototype, definition, and call to the function?

184


How do you decide which integer type to use?

191


How a macro differs from a template?

193


What are the various situations where a copy constructor is invoked?

182


What are c++ files?

151


Explain the difference between static and dynamic binding of functions?

170


Differentiate between a copy constructor and an overloaded assignment operator.

186


Which coding certification is best?

166