PL0语法分析器

编译原理LL1分析表- Translation principle LL1 analytical table

比较简单的一个词法分析器，帮助学编译原理的初学者理解，可作为教学用途-relatively simple one lexical analyzer to help the school build understanding of the principle of beginners can use as a teaching

可以求你需要的汇率转换- May you need in order to the exchange rate transforms

词法分析的小程序，对学编译原理的同学是个好例子-lexical analysis of small programs, compiler theory for school students is a good example

算术表达式词法和语法分析程序,递归下降法,四元式-Arithmetic expression lexical and syntax analysis, recursive descent method, type Quaternion

vb方面的编程，条形码编程。希望对大家有用。-vb aspects of programming, bar code programming.

大学期间写的一个简单的词法分析器,通过输入符合自定义语法规则的程序,得到分析的二元组-University wrote a simple lexical analyzer through importation from the definition of the rules of grammar procedures, the analysis of binary Group

前些天写了个小语言的词法分析程序，因为前些天在VC知识库看到一个pascal词法分析的程序，觉得写得挺复杂的。其实词法分析程序的原理都是一样的，所以我想只要搞明白了简单的词法分析程序，再写复杂的就不难了，无非是多加几个关键字，多写几个条件判断语句而已。词法分析是编译程序的基础，也是最简单的。好，现在让我们看程序吧。 先让我们看看这个小语言的文法吧-few days ago wrote a small language lexical analysis procedures, because the other day in the knowledge base to see a VC pascal lexical analysis procedures, find that quite complex. In fact, lexical analysis procedure is the same principle, I think if you understood a simple lexical analysis procedure to write complex it is not difficult, is nothing but add a few keywords and writing several conditions judgment statement it. Lexical analysis is the basis of compilers, as well as the most simple. Well, now let us look at the procedures it. Let us look at this small language grammar it

词法分析器，是课设的题目。比较简单，下来就可以用了。-Lexical analyzer is the subject of class-based. Relatively simple, it can be used.

1、构造该算符优先文法的优先关系矩阵或优先函数； 2、输入串应是词法分析的输出二元式序列，即某算术表达式“实验项目一”的输出结果。输出为输入串是否为该文法定义的算术表达式的判断结果。 3、算符优先分析过程应能发现输入串出错。 -1, construction of the operator the priority of the priority relation matrix grammar or priority function 2, input strings should be the output of lexical analysis of binary sequence, that is, the arithmetic expression of a