LL(1)语法分析程序,（1）对输入文法，它能判断是否为LL(1)文法，若是，则转（2）；否则报错并终止；

（2）输入已知文法，由程序自动生成它的LL(1)分析表；

（3）对于给定的输入串，应能判断识别该串是否为给定文法的句型

-LL (1) syntax analysis program, (1) on the importation of grammar, it can determine whether to LL (1) grammar, If so, then switch (2); Otherwise errors and terminated; (2) Input known grammar, automatically generated by the LL (1) Analysis Table; (3) For a given input string, Recognition should be able to judge whether the series for a given grammar Sentence