Objective-C-programming

说明：  Objective-C 是一种设计用来支持面向对象开发的简洁的计算机语言，它是标准C语言的一个很小但是很强大的超集。除了C之外，Objective-C主要基于Smalltalk，最早的面向对象的编程语言之一。Objective-C以一种简单和直接的方式使得C语言具有了面向对象的能力。
(Objective-C is a design for a simple computer language that supports object-oriented development, it is a standard C language, a small but very powerful superset. In addition to C, Objective-C based on Smalltalk, one of the first object-oriented programming language. Objective-C object-oriented C language has a simple and direct way of making.)