编写识别表达式文法的合法句子的预测分析程序，对输入的任意符号串，给出分析过程及分析结果。分析过程要求输出步骤、分析栈、剩余输入串和所用产生式。如果该符号串不是表达式文法的合法句子，要给出尽量详细的错误提示。-Write a sentence identifying the legitimate expression grammar prediction analysis program, the input string of arbitrary symbols, given the analysis process and results. Analysis process requires the output steps of the stack, with the remaining input string and the production. If the symbol string is not a legitimate expression of grammatical sentences, as far as possible to give a detailed error message.