Consider the following program written in $C$ syntax:

void swap $($int $a,$ int $b$

int temp;

temp $=a_i$

$a=b$;

$b=$ temp;

$\}$

void main$()\{$

int value $=1,$ list $[5]=\{2,4,6,8,10\}$;

swap $($value$,$ list $[0])$ ;

swap $($list $[0],$ list $[1])$ ;

swap $($value$,$ list $[$value$])$;

$\}$

For each of the following parameter$-$passing methods, what are all of the values of the variables value and list after each of the three calls to swap?

a$.$ Passed by value

b$.$ Passed by reference

c$.$ Passed by value$-$result

Compare and contrast PHP$\text{'}$s parameter passing with that of C#$.$

Consider the following program written in $C$ syntax: