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)A=B+A+C PARSE TREE 2)IS IT A RIGHT SENTENCE ACCORDING TO THE GRAMER

)A=B+A+C PARSE TREE 2)IS IT A RIGHT SENTENCE ACCORDING TO THE GRAMER

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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1)A=B+A+C PARSE TREE

2)IS IT A RIGHT SENTENCE ACCORDING TO THE GRAMER

1. Syntax rule: <assign> → <var>= <expr> Semantic rule: <expr>.expected_type< <var>.actual_type 2. Syntax rule: <expr> → <var> Semantic rule: <expr>.actual_type e<var>.actual_type Predicate: <expr>.actual_type == <expr>. expected_type 3. Syntax rule: <expr> → <var> + <term> Semantic rule: <expr>.actual_type + <term>.actual_type Predicate: <expr>.actual_type == <expr>, expected_type 4. Syntax rule: <term> → <var> Semantic rule: <term>.actual_type + <var>.actual_type 5. Syntax rule: <term> → <var>[2] + <var>[3] Semantic rule: <term>.actual_type + <var>[2].actual_type Predicate: <var>[2].actual_type == <var>[3].actual_type 6. Syntax rule: <var> →A|B|C Semantic rule: <var>.actual_type + look-up(<var>.string)
Transcribed Image Text:1. Syntax rule: <assign> → <var>= <expr> Semantic rule: <expr>.expected_type< <var>.actual_type 2. Syntax rule: <expr> → <var> Semantic rule: <expr>.actual_type e<var>.actual_type Predicate: <expr>.actual_type == <expr>. expected_type 3. Syntax rule: <expr> → <var> + <term> Semantic rule: <expr>.actual_type + <term>.actual_type Predicate: <expr>.actual_type == <expr>, expected_type 4. Syntax rule: <term> → <var> Semantic rule: <term>.actual_type + <var>.actual_type 5. Syntax rule: <term> → <var>[2] + <var>[3] Semantic rule: <term>.actual_type + <var>[2].actual_type Predicate: <var>[2].actual_type == <var>[3].actual_type 6. Syntax rule: <var> →A|B|C Semantic rule: <var>.actual_type + look-up(<var>.string)
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