a BNF grammar that can generate nested if-else structures
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
![1. Write a BNF grammar that can generate nested if-else structures. Assume, the statements inside
the If-else block to be simple.
Eg of the statement that can be generated is
if(x>y){
X = x + y;
if(z>0){
y = x;
}
}
else{
x = x- y;
}
Also show the left-derivation of any statements of your choice that illustrates the correctness of
your grammar.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd3657ef9-0b03-47a1-bd17-e79635b9f8b3%2Fffb7c786-b2dd-4143-bcf1-d76db2d44a54%2F5rv9rd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Write a BNF grammar that can generate nested if-else structures. Assume, the statements inside
the If-else block to be simple.
Eg of the statement that can be generated is
if(x>y){
X = x + y;
if(z>0){
y = x;
}
}
else{
x = x- y;
}
Also show the left-derivation of any statements of your choice that illustrates the correctness of
your grammar.
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