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

Distinguish between: a) Normal layout & Print Layout views b) Windows Clipboard & office Clipboard c) Save & Save As Commands d) Program File & Data File e) Pie Charts & Barr Charts

2348

What is Object Oriented programming.what is the difference between C++ and C?

Infosys,

8 25760

Memory is not a constraint. In a single iteration(NOTE: you can't go back), how will you find out the 10th last node/item in a linked list.

BNB, FDS, Goldman Sachs, Nagarro,

16 28421

how to swap two numbers with out using temp variable

Global eProcure, TCS,

12 21500

Can we use resume in error handling i.e. in the catch block

Infosys,

5 10581

this is to swap to strings....but in output the whole strings are swapped leaving first as it is...why it is so #include int main() { char a[]="ajeet"; char b[]="singh"; long x=*a; long y=*b; cout< 1 4716

how to swap two strings without using any third variable ?

11 39807

What is Object Oriental Progam

2 5347

What is Constructor

Angel Broking,

14 31784

Waht is inheritance

6 9664

what is strcture i++ i ++i answer to this i=5 what is the out put

6 12104

how can u do connectivity in c++ language? plz send me connectivity code in c++ ?

Ascent,

2405

why destructor is not over loaded?

5 19236

Why many objects can working together? How objects working togetherM I want to see example code.

2 5212

suppose A is a base class and B is the derved class. Both have a method foo which is defined as a virtual method in the base class. You have a pointer of classs B and you typecast it to A. Now when you call pointer->foo, which method gets called? The next part of the question is, how does the compiler know which method to call?

EA Electronic Arts,

3 9842

Un-Answered Questions { C++ }

Is there any error below, its a code to delete all entires from a map #include #include iostream.h int main() { int i =0; map TestMap; while(i<3) { TesMap.insert(TestMap::value_type(i,Test)); i++; } typedef map :: iterator mapIter =TestMap.begin(); if(mapIter!=TestMap.end()) { TestMap.erase(mapItrer); ++mapIter; } return 0; }

2444

What is the default width for ouputting a long integer using the insertion operator?

1302

What do you mean by friend class & friend function in c++?

1119

Why can’t you call invariants() as the first line of your constructor?

1091

How a pointer differs from a reference?

1393

What are destructors?

1066

What is a hash function c++?

1127

What is double in c++?

1126

What is a string example?

1155

Describe private, protected and public – the differences and give examples.

1274

Explain function overloading and operator overloading.

1123

State the difference between pre and post increment/decrement operations.

1163

When should you use global variables?

1290

Declare a class vehicle and make it an abstract data type.

1028

How do I use turbo c++?

1038

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