这是编译原理的词法分析源程序

D/A Converter（D/A转换器）-D/A Converter (D/A converter)

1、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。 2、LL(1)分析过程应能发现输入串出错。 3、设计两个测试用例（尽可能完备，正确和出错），并给出测试结果。 -1, input strings should be the output of lexical analysis of binary sequence, that is, the arithmetic expression of a

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.

词法分析程序的功能是，接受一个表达式，输出该表达式中的各类单词符号。测试词法分析程序时，可以按照一定格式输出各类单词符号。 本程序实现整数四则运算表达式的词法分析程序。-Lexical analyzer function is to accept an expression, the output of the expression of the various types of word symbols. Testing lexical analysis program, you can format the output according to certain types of word symbols. This procedure to achieve an integer 4 expression is the lexical analysis program.

这是一个使用标准 C 开发的简单的可以对 C 语言程序进行语法检查的程序，本程序检查你的程序中小括号、中括号、大括号、单引号、双引号、/* */ 注释等的配对情况，可以及时发现程序中存在的语法错误情况。-This is a standard C development can be a simple C language syntax procedures for the inspection procedures, the procedures check your procedures small brackets, brackets, brackets, the single quotes, double quotes,/**/Notes for the match, found it timely procedures the errors of grammar.

pl0，用C写的，短小精悍，还有实例！详细注解-pl0, written in C, small and there are examples! Detailed notes

编译原理课程设计，词法分析，语法分析，语义分析等。-compiler theory curriculum design, lexical analysis, grammar analysis, semantic analysis.

编译原理程序,请多指教。- The translation principle procedure, please much advises.

这是一份实验报告，目的是掌握YACC的使用方法，了解YACC处理二义性的方法。 用YACC等工具生成如下文法表示的表达式对应的计算器 exp->exp + exp | exp - exp| exp * exp |exp / exp |exp ^ exp | - exp |(exp) |NUM 对于输入的表达式，能输出结果。比如: 3 +(4 *5)结果应为23 当出现错误时可以进行错误处理。 -This is a test report, the purpose is to master the use YACC to learn YACC handling of the ambiguity approach. Using tools such as YACC grammar that generates the following expression for the corresponding calculator exp-> exp+ exp | exp- exp | exp* exp | exp/exp | exp ^ exp |- exp | (exp) | NUM expression for the input type, can be output. For example: 3+ (4* 5) the result should be 23 when the error can be error-handling.