b$)$ show in steps, how the compiler$/$programmer

can optimize this $C$ code.

for$($i $=0$;i $<$ n;i$++)\{$ x$=$a$/$b; y$=$b$+$a; s$[$i$]=2*$i$+$b$-$a$+$x$*$y; $\}$ for$($i $=0$;i