Terminology invoking "objects" and "oriented" in the modern sense of object-oriented programming made its first appearance at MIT in the late 1950s and early 1960s. In the environment of the artificial intelligence group, as early as 1960, "object" could refer to identified items (LISP atoms) with properties (attributes); Alan Kay was later to cite a detailed understanding of LISP internals as a strong influence on his thinking in 1966. Another early MIT example was Sketchpad created by Ivan Sutherland in 1960–61; in the glossary of the 1963 technical report based on his dissertation about Sketchpad, Sutherland defined notions of "object" and "instance" (with the class concept covered by "master" or "definition"), albeit specialized to graphical interaction. Also, an MIT ALGOL version, AED-0, established a direct link between data structures ("plexes", in that dialect) and procedures, prefiguring what were later termed "messages", "methods", and "member functionsIncludes: 12 Articles 700 Skill Questions 10 Skill Videos 20 Quiz Sections
Object-oriented programming System Skills - For Beginners & ProfessionalsThe name "Object-oriented programming System" was inspired by musical notation where a sharp indicates that the written note should be made a semitone higher in pitch. The formal programming concept of objects was introduced in the mid-1960s with Simula 67, a major revision of Simula I, a programming language designed for discrete event
"The history of Object-oriented programming System begins with the first Oops product the class libraries were originally written using a managed code compiler system called Simple Managed C (SMC). In 1960,"
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Advanced Object-Oriented Programming
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Q1.What is OOPS?
- OOPS is abbreviated as Object Oriented Programming system in which programs are considered as a collection of objects. Each object is nothing but an instance of a class.
Q2.Write basic concepts of OOPS?
Q3. What is Encapsulation?
- Encapsulation is an attribute of an object, and it contains all data which is hidden. That hidden data can be restricted to the members of that class.
Q4. What is Polymorphism?
- Polymorphism is nothing butassigning behavior or value in a subclass to something that was already declared in the main class. Simply, polymorphism takes more than one form.
Q5. What are manipulators?
- Manipulators are the functions which can be used in conjunction with the insertion (<<) and extraction (>>) operators on an object. Examples are endl and setw.
Q6.What is avirtual function?
- Virtual function is a member function ofclass and its functionality can be overridden in its derived class. This function can be implemented by using a keyword called virtual, and it can be given during function declaration.
- Virtual function can be achieved in C++, and it can be achieved in C Languageby using function pointers or pointers to function.
Q7.What is friend function?
- Friend function is a friend of a class that is allowed to access to Public, private or protected data in that same class. If the function is defined outside the class cannot access such information.
- Friend can be declared anywhere in the class declaration, and it cannot be affected by access control keywords like private, public or protected.
Q8.What are Indexer in C# .Net?
- Indexer allows classes to be used in more intuitive manner. C# introduces a new concept known as Indexers which are used for treating an object as an array. The indexers are usually known as smart arrays in C#. They are not essential part of object-oriented programming. An indexer, also called an indexed property, is a class property that allows you to access a member variable of a class using the features of an array.
Q9. What is operator overloading?
- Operator overloading is a function where different operators are applied and depends on the arguments. Operator,-,* can be used to pass through the function, and it has their own precedence to execute
Q10. What is the use of finalize method?
- Finalize method helps to perform cleanup operations on the resources which are not currently used. Finalize method is protected, and it is accessible only through this class or by a derived class.