语义分析器的c++代码实现，能够从用户输入的源程序中识别一个个单词，并将用户命令以四元式形式输出-Semantic analyzer c++ code can be input from the user to identify the source of a word, and user-type command to quaternion form of the output

sample语法语义分析器，用vc6.0编写，多文件加类构成，有大量注释，不过存在某些错误，鉴于时间关系还没改正。-sample semantic parser, using vc6.0 writing, multi-file plus class composition, there are a large number of annotations, but there were some errors, in view of the time yet to correct.

,词法分析器,可以识别实数，标志符ID，关键字（if elseif while do while for and or）,Token串.语义分析,遇到合法的字符输出，遇到不合法的字符提示不合法-Lexical analyzer can identify the real number, the identifier ID, keyword (the if elseif while do while for and or), Token string. Semantic analysis, met