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b) Draw the runtime stack after each line executes under dynamic scoping. What value assigned to z in line 12?

b) Draw the runtime stack after each line executes under dynamic scoping. What value assigned to z in line 12?

Database System Concepts
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
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b) Draw the runtime stack after each line executes under dynamic scoping. What value assigned to z in line 12?
Transcribed Image Text:b) Draw the runtime stack after each line executes under dynamic scoping. What value assigned to z in line 12?
Problem 2. Static and Dynamic Scope Consider the following block. Assume call-by-value parameter passing. 1 = { 2 ب لنا 3 4 LO 5 6 7 ∞ 9 10 e 11 12 13 14 15 16 -}; int x; int y; int z; x := 4; y := 6; { int f(int y) { return x*y }; int y; }; y = 13; { int g(int x) { return f(y) }; { int y; y = 14; z := g(3); }; };
Transcribed Image Text:Problem 2. Static and Dynamic Scope Consider the following block. Assume call-by-value parameter passing. 1 = { 2 ب لنا 3 4 LO 5 6 7 ∞ 9 10 e 11 12 13 14 15 16 -}; int x; int y; int z; x := 4; y := 6; { int f(int y) { return x*y }; int y; }; y = 13; { int g(int x) { return f(y) }; { int y; y = 14; z := g(3); }; };
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