Recursive Descent subprogram with EBNF rule, using C or Java syntax (syntax) Type (Recursive-Descent Subprogram): ->while () ; The lex method to be used reads a single lexeme and the lexemes' token code is in the nextToken variable is to the left. Suppose that the defined tokens are respectively: while WHILE_CODE Left parantex - LEFTPAREN_CODE right parenthesis - RIGHTPAREN_CODE

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter2: Basic Elements Of C++
Section: Chapter Questions
Problem 4PE: 4. Repeat Programming Exercise 3 by declaring numl, num2, and num3, and average of type double....
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Question 4.
Recursive Descent subprogram with EBNF rule, using C or Java syntax (syntax)
Type (Recursive-Descent Subprogram):
<while_loop> -> while (<condition>) <statement>;
The lex method to be used reads a single lexeme and the lexemes' token code is in the nextToken variable
is to the left. Suppose that the defined tokens are respectively:
while - WHILE_CODE
left parantex - LEFTPAREN_CODE
right parenthesis - RIGHTPAREN_CODE
semicolon - SEMICOLON_CODE
If any error is caught, create the function that calls the error function.
Transcribed Image Text:Question 4. Recursive Descent subprogram with EBNF rule, using C or Java syntax (syntax) Type (Recursive-Descent Subprogram): <while_loop> -> while (<condition>) <statement>; The lex method to be used reads a single lexeme and the lexemes' token code is in the nextToken variable is to the left. Suppose that the defined tokens are respectively: while - WHILE_CODE left parantex - LEFTPAREN_CODE right parenthesis - RIGHTPAREN_CODE semicolon - SEMICOLON_CODE If any error is caught, create the function that calls the error function.
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