For PL$305,$ you also want to find out if the procedures use pass$$by$$value parameters or not. To understand this you design the following PL$305$ program:

####################################################

def foo$2($y$)$:

$.............$ # LINE $1$

end foo$2$ #endof foo$1$

def foo$1()$:

$.............$ # LINE $2$

$.............$ # LINE $3$

$.............$ # LINE $4$

print$($x$)$ # this print will tell

end foo$1$ # end of foo$1$

####################################################

Complete the dotted lines $($i$.$e$.$ LINE $1,$ LINE $2,$ LINE $3,$ LINE $4$ above$)$ in such a way that, when foo$1$ is called, the print statement at the end of foo$1$ prints $1$ if PL$305$ procedures use pass$$by$$value parameters, and it prints $2$ otherwise.