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 does the following do: for(;;) ; a) Illegal b) Loops forever c) Ignored by compiler...not illegal

1118

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

1360

What are pointers, when declared, intialized to a) NULL b) Newly allocated memory c) Nothing. Its random

1072

What is the last index number in an array of 100 characters a) 100 b) 99 c) 101

1092

Would you rather wait for quicksort, linear search, or bubble sort on a 200000 element array? (Or go to lunch...) a) Quicksort b) Linear Search c) Bubble Sort

990

What do nonglobal variables default to a) auto b) register c) static

1098

Which header file allows file i/o with streams a) fileio.h b) iostream.h c) fstream.h

1073

What is the outcome of cout< a) 16 b) 17 c) 16.5

972

What will strcmp("Astring", "Astring"); return a) A positive value b) A negative value c) Zero

1053

Evaluate !(1&&1||1&&0) a) Error b) False c) True

1146

What header file is needed for exit(); a) stdlib.h b) conio.h c) dos.h

1004

Will a recursive function without an end condition every quit, in practice a) Compiler-Specific (Some can convert to an infinite loop) b) No c) Yes

1030

which of the following is not an secondary constant a) array b) real c) union

1756

an operation between an integer and real always yeilds a) integer result b) real result c) float result

1108

which operator is used for performing an exponential operation a) > b) ^ c) none

986

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Un-Answered Questions { C++ General }

Mention the purpose of istream class?

1062

Explain the difference between c++ and java.

1056

Which is best c++ or java?

1041

What does flush do c++?

1016

What are disadvantages of pointers?

985

Does dev c++ support c++ 11?

963

What is a modifier in c++?

1079

Explain public, protected, private in c++?

958

What is data binding in c++?

903

What is a type library?

1062

What are c++ templates used for?

1081

Explain the difference between realloc() and free() in c++?

960

What is difference between malloc()/free() and new/delete?

1115

Why is "using namespace std;" considered bad practice?

1037

What is ctime c++?

1061

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