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

1177

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

1132

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

1154

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

1049

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

1157

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

1135

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

1019

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

1102

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

1210

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

1056

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

1079

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

1804

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

1155

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

1064

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Un-Answered Questions { C++ General }

What are the vectors in c++?

1033

Comment on assignment operator in c++.

1116

What do you mean by vtable and vptr in c++?

1043

What are literals in C++?

1026

Explain virtual class?

1031

Why do we use classes in programming?

1037

Will rust take over c++?

1060

Describe the advantages of operator overloading?

1048

What is main function in c++ with example?

1227

Why main function is special in c++?

1125

Assume an array of structure is in order by studentID field of the record, where student IDs go from 101 to 500. Write the most efficient pseudocode algorithm you can to find the record with a specific studentID if every single student ID from 101 to 500 is used and the array has 400 elements. Write the most efficient pseudocode algorithm you can to find a record with a studentID near the end of the IDs, say in the range from 450 to 500, if not every single student ID in the range of 101 to 500 is used and the array size is only 300

2226

Search for: what is pair in c++?

1121

Describe exception handling concept with an example?

1053

What is tellg () in c++?

1310

What is a tree in c++?

974

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