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

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; }

2388

program in c++ that can either 2 integers or 2 floating point numbers and output the smallest number

Anna University,

1 8474

why all c++ program must have default constructor?

IBM,

6 11402

20% of a 6 litre solution and 60% of 4 litre solution are mixed what the % of mixture of solution it is resulted into?

IonIdea,

5 13595

in the following, A D B G E C F Each of the seven digits from 0,1,2,3,4,5,6,7,8,9 is: a)Represented by a different letter in abov fig: b)Positioned in the fig abov so tht A*B*C,B*G*E,D*E*F are equal. wch does g represents? C

IonIdea,

1 5735

monkey starts climbing up a tree 20ft tall,each hour ,it hops 3ft and slips back by 2ft .how much time it wil tak to reach top of the tree?

IonIdea,

13 45277

design class for linked list and include constructor,destructor,insert option. struct node { int node; struct node &ptr; }

HSBC,

1 4642

design class for linked list and include constructor,destructor,insert option. node of form struct node { int data; struct node &ptr; }

2011

write a program that a 5 digit number and calculates 2 power that number and prints it.

Vimukti Technologies,

2 5219

What are the valid types of data that the main () can return in C/C++ language

3 7668

What are the general quetions are in DEna bank manager IT/System interviews?

Dena Bank, ICICI,

2021

Write a java applet that computes and displays the squares of values between 25 and 1 inclusive and displays them in a TextArea box

2620

method overloading means what?

CTS,

2 5769

Child cObj = new Parent() Wahts the output ?

Patni, TCS,

8 19597

Write a program that takes a 5 digit number and calculates 2 power that number and prints it.

CTS,

2574

Un-Answered Questions { C++ }

What do you know about Volatile keyword in C++? Explain with an example code.

1042

What is encapsulation in ict?

1061

How do you clear a buffer in c++?

963

What is data abstraction? How is it implemented in C++?

1023

How can you quickly find the number of elements stored in a static array?

1098

What is a loop? What are different types of loops in c++?

1132

Explain operator overloading.

1065

Which bit wise operator is suitable for turning off a particular bit in a number?

1118

What is the purpose of ios::basefield in the following statement?

1262

What is difference between oop and pop?

1168

Does dev c++ support c++ 11?

1018

Why namespace is used in c++?

1071

What is flush () in c++?

1081

What are default parameters? How are they evaluated in c++ function?

1172

What is the types of inheritance?

1098

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