Netcracker Technology Software Engineer Interview Questions and Answers

Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Polymorphism allows for flexibility and reusability in code.

• It enables a single interface to be used for different data types or classes.

• Examples include method overriding in inheritance and method overloading within a class.

A double linked list allows traversal in both directions, enhancing flexibility in data manipulation.

• A double linked list consists of nodes, each containing data and two pointers (next and previous).

• Example of a node structure in C++: struct Node { int data; Node* next; Node* prev; };

• Insertion can be done at the beginning, end, or any specific position by adjusting pointers.

• Example of insertion at the beginning: newNod...read more

Scope resolution refers to the process of specifying which scope a particular variable or function belongs to in a programming language.

• Scope resolution is typically denoted by the double colon (::) operator in languages like C++ and PHP.

• It is used to access static members, constants, and overridden methods in a class.

• Example: ClassName::staticMember

• Example: Namespace::functionName

Template syntax allows for the creation of generic functions and classes in programming, enhancing code reusability and flexibility.

• Templates are defined using the 'template' keyword in C++: 'template<typename T>' or 'template<class T>'.

• Function templates allow you to create a function that can operate on different data types: 'template<typename T> T add(T a, T b) { return a + b; }'.

• Class templates en...read more

V table is a table of function pointers used in object-oriented programming, while V pointer is a pointer to the V table.

• V table is a table of function pointers used for dynamic dispatch in object-oriented programming.

• V pointer is a pointer to the V table, allowing objects to call the correct functions at runtime.

• Example: In C++ virtual functions are implemented using V tables and V pointers.

File handling classes are used in programming to read, write, and manipulate files.

• File handling classes provide methods to open, read, write, and close files.

• Examples include FileInputStream, FileOutputStream, FileReader, FileWriter in Java.

• These classes help in managing file operations efficiently and securely.

Friend function is a function that is not a member of a class but has access to its private and protected members.

• Friend functions are declared inside a class with the 'friend' keyword.

• They can access private and protected members of the class.

• They are not member functions of the class.

• Example: class MyClass { private: int x; friend void myFriendFunction(MyClass obj); };