020833

说明：  这是个编译原理的课程设计，是一个DO-WHILE循环语句的翻译程序设计，包括词法分析，语法分析，生成中间代码四元式。
(This is a compiler theory of curriculum design, is a DO-WHILE loop is the translation program design, including lexical analysis, grammar analysis, code generation middle-4 yuan.)