dont post copied answers from any sourcewant only correct and genuine answer Question 3Consider the following program:program main;var x, y, z : integer;procedure subl;var a, y, z : integer;begin{ subl }end;{ subl }procedure sub2;var a, b, z: integer;begin { sub2 }{ sub2 }end;procedure sub3;var a, x, w: integer;begin { sub3 }end;{ sub3 }begin { main }end.{ main }Given the following calling sequences and assuming that dynamic scoping is used, whatvariables are visible during execution of the last subprogram activated? Include with eachvisible variable the name of the unit where it is declared.a. main calls sub3; sub3 calls sub2; sub2 calls sub1.

The answer for the given requirement is

Answered: Consider the following program: program…

Consider the following program: program main; var x, y, z : integer; procedure subl; var a, y, z : integer; begin { subl } end; { sub1 } procedure sub2; var a, b, z : integer; begin { sub2 }

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

dont post copied answers from any source

want only correct and genuine answer

Question 3
Consider the following program:
program main;
var x, y, z : integer;
procedure subl;
var a, y, z : integer;
begin
{ subl }
end;
{ subl }
procedure sub2;
var a, b, z: integer;
begin { sub2 }
{ sub2 }
end;
procedure sub3;
var a, x, w: integer;
begin { sub3 }
end;
{ sub3 }
begin { main }
end.
{ main }
Given the following calling sequences and assuming that dynamic scoping is used, what
variables are visible during execution of the last subprogram activated? Include with each
visible variable the name of the unit where it is declared.
a. main calls sub3; sub3 calls sub2; sub2 calls sub1.

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