1 for 4 portions grammar definition: G (Vn, Vt, S, P) Vn grammar nonterminal collection, in experiments using uppercase letters that Vt grammar end set of symbols, in experiments using lowercase letters represent S start symbol, in the experiment is an element of the set Vn P production, divided left and right parts, the left part of a non-terminal symbols, the right part of the end of the symbol or symbols of the end of a string, such as S-> ab | c 2, according to the nature of the various parts of the grammar, design a reasonable data structure used to represent the grammar, 1) If you use C language, the grammar can be designed to form a structure, the structure should be included in the above-mentioned four parts, 2) If you are using C++ language, the grammar can be designed in the form of statutory class, class contains at least four data members, respectively, said four portions The specific design grammar data structures completed by the students according to their

InputAndOutputOfGrammar.c

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