$1.$ Consider the following code:

program MAIN;

var i : integer;

var a : array$[1.\mathrm{.}5]$ of integer;

procedure SUB$($x : integer$)$;

$\{$x$++$; a$[$i$]$ :$=$ a$[$i$-2]+3$; i$++$; x$++$; a$[$i$]$ :$=$ a$[$i$+1]+$ x; x$++$; i$++$; a$[$i$]$ :$=$ a$[$i$]+$ x;$\}$

$($end SUBPROG$)$

$\{$a$[1]$ :$=2$; a$[2]$ :$=3$; a$[3]$ :$=4$; a$[4]$ :$=5$; a$[5]$ :$=6$; i :$=3$;

call SUB$($a$[$i$])$;

print $($a$[1.\mathrm{.}5])$;

$\}$

$($end MAIN$)$

Note: Assume that all un$-$initialized variables have the value zero.

Note: For each question below $($a$)$ through $($f$)$ work must accompany your solution.

Show in detail the trace you used to arrive at each of the answers.

$(4$ pts$)$

$($a$)$ What is the program output assuming that the parameter is passed by value?