#100 oops interview questions code

This is so because the compiler won’t determine the depth of the recursion at the compile time. Can we have a recursive inline function in C++?Įven though it is possible to call an inline function from within itself in C++, the compiler may not generate the inline code. The syntax of a typical inline function is: Inline return-type function-name(parameters)Īs the inlining is a request, not a command, the compiler can ignore it. Small inline functions might increase program efficiency. The substitution is completed by the C++ compiler at compile time.

#100 oops interview questions code

As the name suggests, an inline function is expanded in line when it is called.Īs soon as the inline function is called, the whole code of the same gets either inserted or substituted at the particular point of the inline function call. In order to reduce the function call overhead, C++ offers inline functions. What is an Inline Function? Is it possible to ignore inlining? Some of the storage class names in C++ include mutable, auto, static, extern, register, etc. What is a storage class?Ī storage class in C++ specifically resembles the scope of symbols, including the variables, functions, etc. 'Volatile' is a function that helps in declaring that the particular variable is volatile and thereby directs the compiler to change the variable externally- this way, the compiler optimization on the variable reference can be avoided. What is the function of the keyword “Volatile”? The use of the keyword template is made for defining a class template. What is a class template?Ī class template is a name given to the generic class. Public: Class members declared as public can be accessed throughout the program.Ī namespace is used for resolving the name conflict of the identifier, which is accomplished by placing them under various namespaces.Protected: In addition to the class in which they are declared, the child classes can access its parent class's protected members.Even child classes are disabled to access private members of its parent class. Private: Such class members can’t be accessed outside the class in which they are declared and are only accessible within the same class.There are three types of access specifiers in C++: What is the access specifier and what are the types?Īn access specifier determines how the class members, i.e., functions and variables, will be accessed outside the class's scope. What is inheritance?Ĭ++ allows classes to inherit some of the commonly used state and behavior from other classes. However, the process followed in transferring the data through email is not displayed because it is of no use to you.

This outcome is just the success message that is displayed to confirm that your email has been sent. What is abstraction?Īn abstraction in C++ is hiding the internal implementations and displaying only the required details.įor example, when you send an important message through email, at that time, only writing and clicking the send option is used. The functions of a class are applied for this purpose. It is applied to prevent direct access to the data for security reasons.

What is encapsulation?Įncapsulation is the process of binding together the data and functions in a class. An object can have fields, methods, and constructors. What is an object?Īn object is an instance of the class. It reflects different entities, attributes, and actions. What is a Class?Ī class is a user-defined data type that is at the center of OOP. An Object-Oriented Programming System is a paradigm that includes concepts such as data binding, polymorphism, and inheritance, among others. What is C++?Ĭ++ is a computer programming language that is a superset of C, with additional features. Top C++ Interview Questions and Answers Basic C++ Level Interview Questions 1. We’ve divided the questions into basic, intermediate, and advanced. We’ve put together a list of the most important C++ interview questions and answers to help you prepare for an interview. As such, several jobs require candidates to have a profound understanding of C++. The imperative, object-oriented programming language is widely used as a general-purpose programming language. Akhil Bhadwal | 24 Aug, 2022 Top 40 C++ Interview Questions and Answers in 2023Ĭ++ is still as relevant today as it was during its advent in the mid-80s.