Java Reference
In-Depth Information
static final double
VARIATION = 5 ;
static final double
INITIAL CASH = 100;
static final int
ITEM COUNT = 2 ;
static final
String [] item =
new
String []
{
"apples"
,
"pears"
}
;
static double
price [] =
new double
[ITEMCOUNT ] ;
static int
inventory [] =
new i n t
[ITEMCOUNT ] ;
static double
cash = INITIAL CASH ;
public static void
main(String [] args)
{
for
(
int
day = 1; day
<
= NUMBER OF DAYS ; d a y++)
{
for
(
int
i=0;i
<
ITEM COUNT ; i ++)
{
price[i] = computePrice(BASEPRICE , VARIATION) ;
System. out . println (
"Day: "
+day+
" out of 10"
);
int
choice ;
do
printMenu() ;
choice = getChoice() ;
switch
(choice)
{
case
1:
// Print cash balance and inventory
System. out . println (
"Cash: "
+ currencyFormatter(cash)) ;
for
(
int
i=0;i
<
ITEM COUNT ; i ++)
{
System. out . println ( item [ i ] +
" inventory: "
+ inventory [ i
]+
" Price: "
+ currencyFormatter(price [ i ]) ) ;
break
;
case
2:
{ //Buy Product
int
itemID = getProductID() ;
int
amount = getQuantity(item[ itemID] ,
"buy"
);
if
( ! buy( itemID , amount) )
{
System. out . println (
"You don't have enough money"
);
break
;
case
3:
// Sell Product
int
itemID = getProductID() ;
int
amount = getQuantity(item[ itemID] ,
"sell"
);
if
( ! s e l l ( itemID , amount) )
{
{
System. out . println (
"You don't have enough "
+item[itemID
]) ;
break
;
}
}
}
while
(choice != 4);
System. out . println (
"You finished with:"
+ currencyFormatter(cash)) ;
}
Note that we have simplified the menu. The new
printMenu
method is shown next.
public static void
printMenu()
{
