Convert the following grammar into LL(1) grammar then write a Java -- 2
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Convert the following grammar into LL(1) grammar then write a Java or C++ program that uses the
LL(1) method to decide whether a given string can be derived in the grammar. If the sentence is
derivable, your program should output the derivation of the sentence.
program → data_decls func_list
func_list → ɛ | func func_list
func → func_decl ; | func_decl { data_decls statements }
func_decl → type_name ID ( parameter_list )
type_name → int | void | decimal
parameter_list → ɛ | void | non-empty_list
non-empty_list → type_name ID | non-empty_list , type_name ID
data_decls → ɛ | type_name id_list ; data_decls
id_list → id | id_list , id
id → ID | ID [ expression ]
block_statements → { statements }
statements → ɛ | statement statements
statement → assignment | func_call | return_statement
assignment → id = expression ;
func_call → ID ( expr_list ) ;
expr_list → ɛ | non-empty_expr_list
non-empty_expr_list → expression | non-empty_expr_list , expression
return_statement → return expression ; | return ;
expression → term | expression addop term
addop → + | -
term → factor | term mulop factor
mulop → * | /
factor → ID | ID [ expression ] | ID ( expr_list ) | NUMBER | ( expression )
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