PRODUCTION SEMANTIC RULES 1) L-E n L.val = E.val E.val = E1.val+T.val E.val = T.val T.val = T1.val x F.val 2) E - E + T 3) Е+T 4) T- T * F 5) T- F T.val = F.val 6) F- (E) F.val = E.val 7) F digit F.val = digit.lexval For the following SDD give annotated parse trees for the following expressions: a. (3+4)*(21+5)n b. 4*2*6+(2*1)+1n
PRODUCTION SEMANTIC RULES 1) L-E n L.val = E.val E.val = E1.val+T.val E.val = T.val T.val = T1.val x F.val 2) E - E + T 3) Е+T 4) T- T * F 5) T- F T.val = F.val 6) F- (E) F.val = E.val 7) F digit F.val = digit.lexval For the following SDD give annotated parse trees for the following expressions: a. (3+4)*(21+5)n b. 4*2*6+(2*1)+1n
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
![PRODUCTION
SEMANTIC RULES
1)
L → E n
L.val = E.val
%3D
2)
E → E + T
E.val = E1.val + T.val
%3D
3)
E - T
E.val = T.val
4) T+ Tị * F
T.val = T1.val x F.val
5)
T -F
T.val = F.val
6) F→ (E)
F.val = E.val
7) F- digit
F.val = digit.lexval
For the following SDD
give annotated parse trees for the following expressions:
a. (3+4)*(21+5)n
b. 4*2*6+(2*1)+1n
OF SCIE](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2958c4eb-4877-4f69-9215-7545d4c991ef%2F71423b55-8a28-40dc-ac02-9eb46b8a7db1%2Fl7xygx_processed.jpeg&w=3840&q=75)
Transcribed Image Text:PRODUCTION
SEMANTIC RULES
1)
L → E n
L.val = E.val
%3D
2)
E → E + T
E.val = E1.val + T.val
%3D
3)
E - T
E.val = T.val
4) T+ Tị * F
T.val = T1.val x F.val
5)
T -F
T.val = F.val
6) F→ (E)
F.val = E.val
7) F- digit
F.val = digit.lexval
For the following SDD
give annotated parse trees for the following expressions:
a. (3+4)*(21+5)n
b. 4*2*6+(2*1)+1n
OF SCIE
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