$1$ function totalCost $=$ CartTotal$($item$1$Cost, item$1$Discount, item$2$Cost, item$2$Discount$)$

$\%$ Assign totalcost with the discounted cost of items $1$ and $2$ totalcost $=0$

end

Code to call your function $?$

$1$

CartTotal$(10,0\mathrm{.}5,20,0\mathrm{.}4)$