C++ General Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

C++ General Interview Questions

Questions Answers Views Company eMail

How much is size of struct having 1 char & 1 integer?

Persistent,

11 16629

They will ask u question about single linked list?. Write Code for to insert delete node.

Persistent,

2 5904

if there is binary tree which one is the easiest way to delete all child node?

Persistent,

1 6110

Write a C program to calculate the salary of each employee in your company. You need to input the hours worked and the hourly rate. The company pays 1.5 times the hourly rate for all hours worked in excess of 48 hours. Use the formulas below to calculate the salary: if employee worked less than 48 hours salary = hours * rate; if employee worked more than 48 hours salary = 48.0 * rate + ( hours − 48.0 ) * rate * 1.5; You are required to use a loop to produce the sample output as given below.

1 13142

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

emc2,

2 8861

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

1 3543

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 12493

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 5918

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

3 8708

What is the output of the following 3D Array int arr[3][2][2]={1,2,3,4,5,6,7,8,9,10,11,12}; what is the output for arr[2][1][0]?

HCL, Integra, IPMC, ORG,

6 43254

What are the advantages of C++ programming compared to C programming?

HAL,

2 6100

Adobe Interview & Adobe Placement Paper

Adobe,

1 11354

what is the difference between linear list linked representaion and linked representation? what is the purpose of representing the linear list in linked represention ? is it not avoiding rules of linear represention?

2416

What is volatile and pragma? When they are used?

1 3818

In which memory a class gets stored(in heap /in stack)? And why??

2 9145

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Un-Answered Questions { C++ General }

What is the full name of logo?

1167

Define vptr.

1092

If you don’t declare a return value, what type of return value is assumed?

1006

Why is c++ difficult?

1110

When do you call copy constructors?

1197

Explain the advantages of using friend classes.

1225

What is extern c++?

1059

What are the advantages of using pointers in a program?

1190

Define pointers?

1102

Which bit wise operator is suitable for checking whether a particular bit is on or off?

1082

What is using namespace std in c++?

1207

What are the uses of typedef in a program?

1133

Explain deep copy and a shallow copy?

1117

What is helper in c++?

1151

What is prototype in c++ with example?

1233

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