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

When is a template better solution than a base class??

emc2,

2 8786

Explain calling an object's member function(declared virtual)from its constructor?

1 3488

What is the concept of object oriented program?

6 7977

You're given an array containing both positive and negative integers and required to find the sub-array with the largest sum (O(N) a la KBL). Write a routine in C for the above.

4 12373

Given an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like. [ I ended up giving about 4 or 5 different solutions for this, each supposedly better than the others ].

1 5856

Give a very good method to count the number of ones in a "n" (e.g. 32) bit number.

3 8614

wht is ditch

2240

When you define a integer it gets stored in which data structure?(Stack or a heap)

emc2,

2 6050

What is a scope operator and tell me its functionality?

emc2,

3 6110

What is difference between function overloading and overriding?

emc2,

1 6160

What is difference between new and malloc?

emc2,

7 11653

What is difference between #define and const?

emc2,

3 7804

Write pseudo code for push in a stack?

emc2,

2 10955

What is Hashing and how is it done? Pictorial form?

emc2, Wipro,

2 8827

Polymorphism with an example?

Accenture, emc2,

8 14818

Un-Answered Questions { C++ }

How to improve object oriented design skills?

1018

When one must use recursion function? Mention what happens when recursion functions are declared inline?

1203

What is inheritance write a program to show use of inheritance?

1149

Write about c++ storage classes?

1203

What are the vectors in c++?

1033

hi, this is raju,iam studying b.tech 2nd year,iam want know about group1 and group2 details, and we can studying without going to any instutions? please help me.

1955

Tell us the size of a float variable.

1055

What is a container class?

1155

What are arithmetic operators?

1006

What is the use of c++ programming language in real life?

1053

Difference between a homogeneous and a heterogeneous container

1147

Write a Program for read a line from file from location N1 to N2 using command line arguments. Eg:exe 10 20 a.c

1296

write a code for this. serial_number contained in the header of the file will be read , if this serial number is less than a previous serial number within a successfully processed file, or is the same as another serial number within a successfully processed file, or if the field contains anything other than 7 digits, then the file must error with the reason ‘Invalid SERIAL_NUMBER’.

2285

What is the disadvantage of using a macro?

1129

What apps are written in c++?

1102

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