首先论述程序设计的本质，给出程序设计的三个视图，然后从语言、环境和应用三个方面分别解析程序设计，使读者逐步掌握程序设计的系统化思维、相关技术思想和方法，-This article first discusses the essence of the program design, program design are given three views, then language, environment and application from three aspects of analyt