a) Consider the following JavaScript program: var a, y, C; function subl() { var b, z, c; } function sub2 () { var a, b, y; } function sub3 () { var a, x, W; } List all the variables, along with the program units where they are declared, that are visible in the bodies of sub2 when the sequence of function call is: "sub1 calls sub3 and sub3 calls sub2", assuming dynamic scoping is used.

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
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a) Consider the following JavaScript program:
var a, y, C;
function sub1() {
}
var b, z, c;
function sub2 () {
var a, b, y;
}
function
sub3 () {
var a, x, W;
}
List all the variables, along with the program units where they are declared,
that are visible in the bodies of sub2 when the sequence of function call is:
"sub1 calls sub3 and sub3 calls sub2", assuming dynamic scoping is used.
Transcribed Image Text:a) Consider the following JavaScript program: var a, y, C; function sub1() { } var b, z, c; function sub2 () { var a, b, y; } function sub3 () { var a, x, W; } List all the variables, along with the program units where they are declared, that are visible in the bodies of sub2 when the sequence of function call is: "sub1 calls sub3 and sub3 calls sub2", assuming dynamic scoping is used.
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