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

Write about c++ storage classes?

1257

How the delete operator differs from the delete[]operator?

1154

What do you understand by pure virtual function? Write about its use?

1049

Explain the concept of dynamic allocation of memory?

1156

In which situation the program terminates before reaching the breakpoint set by the user at the beginning of the mainq method?

1140

What do you understand by zombie objects in c++?

1169

How the programmer of a class should decide whether to declare member function or a friend function?

1185

Using a smart pointer can we iterate through a container?

1147

Should the this pointer can be used in the constructor?

1076

We all know that a const variable needs to be initialized at the time of declaration. Then how come the program given below runs properly even when we have not initialized p?

1149

When should I use unitbuf flag?

1073

What is the difference between prefix and postfix versions of operator++()?

1138

What is the difference between an array and a list?

1091

How can you prevent accessing of the private parts of my class by other programmers (violating encapsulation)?

1132

When should overload new operator on a global basis or a class basis?

1138

Un-Answered Questions { C++ }

What do you mean by translation unit in c++?

1439

Carry out conversion of one object of user-defined type to another?

1098

Explain binary search.

1052

Write a program to implement OOPS concepts such as inheritance, polymorphism, friend function, operator overloading?

4807

Why null pointer is used?

1099

Write about the members that a derived class can add?

1029

What is a vector c++?

1263

What is the output of the following program? Why?

1206

How the delete operator differs from the delete[]operator?

1154

Difference between pass by value and pass by reference?

1218

What is virtual function? Explain with an example

1149

What is the difference between a declaration and a definition?

1172

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

2634

What do you mean by function overriding & function overloading in c++?

1278

How can you quickly find the number of elements stored in a dynamic array? Why is it difficult to store linked list in an array?

1086

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