procedure mystery (x, y, z); integer x, y, z; begin z = x - 1; y = 1; end and consider the following code fragment: A[1] := 3; A[2] := 3; n := 1; mystery (A[2], A[n], n); A) What will be the final values of n, A[1] and A[2] if the parameters are passed by reference? B) What will be the final values of n, A[1] and A[2] if the parameters are passed by value? C) What will be the final values of n, A[1] and A[2] if the parameters are passed by name?
procedure mystery (x, y, z); integer x, y, z; begin z = x - 1; y = 1; end and consider the following code fragment: A[1] := 3; A[2] := 3; n := 1; mystery (A[2], A[n], n); A) What will be the final values of n, A[1] and A[2] if the parameters are passed by reference? B) What will be the final values of n, A[1] and A[2] if the parameters are passed by value? C) What will be the final values of n, A[1] and A[2] if the parameters are passed by name?
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
Consider the following procedure:
procedure mystery (x, y, z); integer x, y, z;
begin
z = x - 1;
y = 1;
end
and consider the following code fragment:
A[1] := 3;
A[2] := 3;
n := 1;
mystery (A[2], A[n], n);
A) What will be the final values of n, A[1] and A[2] if the parameters are passed by reference?
B) What will be the final values of n, A[1] and A[2] if the parameters are passed by value?
C) What will be the final values of n, A[1] and A[2] if the parameters are passed by name?
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