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1. What does the program print? 2. Draw a diagram of the runtime stack when function A has just been called. For each frame, show the static and dynamic links. 3. Refer to the runtime stack, briefly explain how function A finds variable g.

1. What does the program print? 2. Draw a diagram of the runtime stack when function A has just been called. For each frame, show the static and dynamic links. 3. Refer to the runtime stack, briefly explain how function A finds variable g.

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
Section: Chapter Questions
Problem 1PE
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Consider the following pseudo-code, assuming nested subroutines and static scoping: main () { } int g = 0; int x = 9; function B(int a) { int x = a + 5; R (1); } function A (int n) { g=n; } function R(int m) { print x; x = x / 2; if (x > 1) else R (m + 1); A (m); } // body of main B (3); print g; 1. What does the program print? 2. Draw a diagram of the runtime stack when function A has just been called. For each frame, show the static and dynamic links. 3. Refer to the runtime stack, briefly explain how function A finds variable g.
Transcribed Image Text:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Consider the following pseudo-code, assuming nested subroutines and static scoping: main () { } int g = 0; int x = 9; function B(int a) { int x = a + 5; R (1); } function A (int n) { g=n; } function R(int m) { print x; x = x / 2; if (x > 1) else R (m + 1); A (m); } // body of main B (3); print g; 1. What does the program print? 2. Draw a diagram of the runtime stack when function A has just been called. For each frame, show the static and dynamic links. 3. Refer to the runtime stack, briefly explain how function A finds variable g.
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