摘要：
bintree.h:12:1: error: unknown type name ‘using’using namespace std;==============bintree.h:28:1: error: unknown type name ‘class’class CBintree==============the result is that lex&yacc cannot use in C++, i use flex and yacc and gcc to compile the program 阅读全文
摘要：
yyerror(char*, ...) is neccary to given 阅读全文