Executive Software Developer Interview Questions and Answers

Virtual functions allow polymorphism, abstract classes cannot be instantiated, pure virtual functions have no implementation.

• Virtual functions are functions in a base class that can be overridden in derived classes

• Abstract classes are classes that have at least one pure virtual function and cannot be instantiated

• Pure virtual functions have no implementation and must be overridden in derived classes

• Virtual functions can have an implementation in the base class, pure virtual fu...read more

Copy constructor creates a new object by copying an existing object of the same class.

• Copy constructor is used to create a new object with the same values as an existing object.

• It takes an object of the same class as a parameter.

• It is different from regular constructors as it creates a new object by copying an existing object.

• Copy constructor is invoked when an object is passed by value or returned by value.

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Inheritance allows code reuse and promotes code organization.

• There are different types of inheritance: single, multiple, multilevel, hierarchical, and hybrid.

• Single inheritance involves a class inheriting from a single base class.

• Multiple inheritance involves a class inheriting from multiple base classes.

• Multilevel inheritance involves a class inheriting ...read more

Copy constructor creates a new object by copying an existing object, while = operator assigns the value of one object to another.

• Copy constructor is used to create a new object with the same values as an existing object.

• = operator is used to assign the value of one object to another.

• Copy constructor is invoked when a new object is created from an existing object.

• = operator is invoked when an existing object is assigned a new value.

• Copy constructor takes a reference to an obje...read more

Lambda functions are anonymous functions that can be passed as arguments or stored in variables.

• Lambda functions are also known as anonymous functions or closures.

• They are commonly used in functional programming languages like Python and JavaScript.

• Lambda functions can be used to create higher-order functions, which take other functions as arguments.

• They are often used for filtering, mapping, and reducing data in collections.

• Lambda functions can be defined using the lambda ke...read more