$\backslash$#$13.(2$ points$)$ Let the function fun be defined as

$```$

int fun$($int $*$k$)\{$

$*$k $+=4$;

return $3*(*$k$)-1$;

$\}$

Suppose fun is used in a program as follows:

void main$()\{$

int i $=10,$ j $=10,$ sum$1,$ sum$2$;

sum$1=($i$/2)+$ fun$($&i$)$;

sum$2=$ fun$($&j$)+($j$/2)$;

$\}$

$```$

What are the values of sum$1$ and sum$2$

a$.$ if the operands in the expressions are evaluated left to the right?

b$.$ if the operands in the expressions are evaluated right to the left?