用C++写的此法分析器环境为DEVC++，该词法分析器输入一个文件对其输出三个文件有标识符，关键字，整形常量-Written using C++ parser environment for this method DEVC++, the lexical analyzer input a file with an identifier of its output three files, keywords, shaping constant

大数运算，当整形数字溢出时，实现大数之间的各种数学运算-Computing large numbers, numeric overflow when shaping to achieve a variety of mathematical operations between large numbers