Pearson eText for Concepts of Programming Languages -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135102268
Author: Robert Sebesta
Publisher: PEARSON+
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Expert Solution & Answer
Chapter 3, Problem 3PS
Explanation of Solution
The modified BNF in which the + operator has a precedence over * operator and + operator is right associative is as follows:
=
A | B | C
*
|
+
|
()
|
Consider the sentence A = B + C * A:
The derivation of this sentence using the above BNF is as follows:
=
A = *
A = *
A = *
A = * A
A = * A
A = + * A
A = + * A
A = + * A
A = + C * A
A = + C * A
A = B + C * A
Since, the * operator is earlier in the BNF, it has a lower precedence...
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Chapter 3 Solutions
Pearson eText for Concepts of Programming Languages -- Instant Access (Pearson+)
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