$1.$ Create a function 'setter' with parameters P and a new value k $($integer$).$ The function

should follow the pointer and change the integer at the end of the chain to the new value.

$[8$ marks$]$

$2.$ Call 'setter' in main with k$=2.$ When it returns, demonstrate that the new value of i was

changed $($hint: print i$).[2$ marks$]$

$3.$ Create a swap function with parameters A$2$ and B$2.$ The function should swap them

such that A$2$ now points at B and B$2$ now points to A$.$ Call this function with A$2/$B$2$ in

main. $[8$ marks$]$