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

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

1003

Which is not an ANSII C++ function a) sin() b) tmpnam() c) kbhit()

1537

What does getch() do according to the ANSI C++ standard a) Reads in a character b) Checks the keyboard buffer c) Nothing in particular (Its not defined there)

1055

Will a C compiler always compile C++ code a) Yes b) No c) Only optimized compilers

1055

What ANSI C++ function clears the screen a) clrscr() b) clear() c) Its not defined by the ANSI C++ standard

1034

What number of digits that can be accuratly stored in a float (based on the IEEE Standard 754)? a) 6 b) 38 c) An unlimited number

1275

Which of the following is evaluated first: a) && b) || c) !

2370

What does 7/9*9 equal ? a) 1 b) 0.08642 c) 0

960

Which of the following is not a valid declaration for main() a) int main() b) int main(int argc, char *argv[]) c) They both work

1082

Evaluate as true or false: !(1 &&0 || !1) a) True b) False c) Invalid statement

1187

Which command properly allocates memory a) char *a=new char[20]; b) char a=new char[20]; c) char a=new char(20.0);

1057

What operator is used to access a struct through a pointer a) >> b) -> c) *

1122

True or false, if you keep incrementing a variable, it will become negative a) True b) False c) It depends

2388

What character terminates all character array strings a) b) . c) END

1281

If you push the numbers (in order) 1, 3, and 5 onto a stack, which pops out first a) 1 b) 5 c) 3

1378

Un-Answered Questions { C++ }

Of the numbers 12 23 9 28 which would be at the top of a properly implemented maxheap a) 28 b) 9 c) Any of them could be

1419

What is time h in c++?

1139

Is it possible to get the source code back from binary file?

1364

Why can't we have instance(stack) of a class as a member of the same class like eg.Class A{A obj;} as we can have self refential pointer

2153

What is the use of class in c++?

1085

Advantage and disadvantage of routing in telecom sector

1307

What is a standard template library (stl)? What are the various types of stl containers?

1170

Are c and c++ different?

994

Can I create my own functions in c++?

1091

How would you implement a substr() function that extracts a sub string from a given string?

1047

Can you be able to identify between straight- through and cross- over cable wiring? And in what case do you use straight- through and cross-over?

1110

What are classes oop?

1027

What is constructor in oop?

1117

How to use CMutex, CSemaphore in VC++ MFC

4786

what are function pointers?

1060

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