面向对象的程序语言的概念在Simula,Smalltalk及C++中的应用

面向对象的方法是下一代语言中最有前途的方法之。面向对象的程序语言介绍了程序语言领域中许多新概念以及有用的概念。在这篇文章中，研究了三种主要的ＯＯＰＬｓ：Ｓｉｍｕｌａ，Ｓｍａｌｌｔａｌｋ和Ｃ＋＋，Ｓｉｍｕｌａ是最早的ＯＯＰＬ．（ｏｖｅｒｌｏａｄｉｎｇ）等都是Ｓｍａｌｌｔａｌｋ对ＯＯＰＬｓ的发展所做的贡献。Ｃ＋＋是第一个被广泛采用的ＯＯＰＬ，是因为Ｃ＋＋是Ｃ语言的高级形式，而Ｃ语言又是目前最通用的程序

IMPLEMENTATION OF CONCEPTS OF OBJECT-ORIENTED PROGRAMMING LANGUAGE IN SIMULA, SMALLTALK, AND C++

An Object-oriented approach is one of the most promising approaches for the next generation language. Object-oriented programming languages (OOPLs) introduce many new concepts and useful concepts in the field of programming language. In this paper we study three major OOPLs: Simula, Smalltalk, and C++. Simula is considered the first OOPL. Simula introduced the concept of objects and classes for the first time. Smalltalk is the first full-fledged OOPL. Refinements of inheritance, subclass, overloading are some of the contribution of Smalltalk to the development of OOPLs. C++ is the first widely used OOPL, since C++ is a superset of the C which is a popular programming language. The basic concepts in OOPLs are as follows: objects, classes, subclasses, messages, methods, inheritance, encapsulation, information hiding, and so on.In this paper, we examine these concepts and how these concepts are implemented in Simula, Smalltalk, and C++. Then we compare them in terms of object-oriented concepts, and suggest further research.