Answered: symbol tables in separation for all 4…

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. Draw the symbol tables in separation for all 4 scopes in this program. Assume each table
contains two columns: name and type.
2. If the language uses static scoping, what’s the expected output from the print statement?
Justify your answer by showing the tree of the symbol tables at the print statement.
3. If the language uses dynamic scoping, what’s the expected output from the print statement?
Justify your answer by showing the tree of the symbol tables at the print statement.

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Consider the following pseudo-code. Assume the language has one global scope, and one scope for
each braced code block (including function and branch):
int x = 1;
void f1(int x) {
if (x > 4)
f1 (x
10 |}
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1);
int x = 5;
f2();
else {
void f2() { print x; }
f1 (6);

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