Answered: Use the grammar you have created in…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Use the grammar you have created in Question 1 for an infix expression and using the
technique: Syntax Directed Definition write appropriate semantic rules to convert an infix
expression of that grammar to a prefix expression.
Precedence of operators are given below (high to low):
 ()
*, /
+, - =
Associativity of operators are given below:
+, , *, / [Left Associative]
= [Right Associative]
Taking into account the precedence and the associativity of the operators in this question,
if any modification is needed for your grammar in Question 1 to be used in this question,
do it. After the necessary modification(s),
a) write the semantic rules for infix to prefix conversion
b) draw the annotated parse tree for the string: a=b/(c–d)*(x+y)

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