i have learn this Java since last month for my work purposes.
i wanted do this exercise.
this is Vending Machine Program.
I don't if write it in a wrong way.
So i need somebody to show me the in my code.
i know there must be wrong somewhere in the code.
could somebody please help me to.
output for the program is supposed to be like this :
**********************************************************************************************
[Coins available : RM 1 [5] RM 0.50 [5] RM).20 [5] RM0.10 [5] ]
[Drinks available : Pepsi [5] Coke [5] Orange [5] 7up [5] ]
Input Coin ==>2
Invalid Coin ..
Input Coin ==>1
Input Coin ==>0.50
Drinks [RM 1.20]
1. Pepsi 2. Coke 3. Mirinda Orange 4. 7up
Choice==>1
Your balance is : 1x0.20 1x0.10
Do you want to continue y/n ==>Y
[Coins available : RM 1 [6] RM 0.50 [6] RM).20 [4] RM0.10 [4] ]
[Drinks available : Pepsi [4] Coke [5] Orange [5] 7up [5] ]
Input Coin ==>
**************************************************************************************
description about the program :
**************************************************************************************
This Vending Machine program is a program that allow user to buy a can drinks. There are four types of can drink which is Pepsi, Coke, Orange and 7up. For that purposes user have to insert coins whereby valid inputs for the coins are RM1, 50 cents, 20 cents and 10 cents. The price for the can drinks is RM1.20 each. This program will read in number of coins from user until it reach the price and then ask user to choose the types of can drink that available and give balance to user and will then output the number of coins available and the drinks available. After that user can choose either to repeat the purchase or end the program.
*************************************************************************************
and this is my code.
***************************************************************************************
import.java.util.scanner;
public class VendingMachine
{
public static void main (String args[])
{
int[4] coin = {5,5,5,5};//create an array to hold coin values
int[4] drink = {5,5,5,5}; //create an array to hold drink values
int choice;
char cont;
//String input1, input2, input3;
double price = 1.2, balance = 0, coinInsert = 0, sumCoininsert = 0;
showmenu(coin, drink);
sumCoininsert = inputcoin(coinInsert);
showdrinks(choice);
showbalace(sumCoininsert, price);
contmethod(cont);
}
/*****************showmenu method*****************/
public static int showmenu (int coin, int drink)
{
int coin;
int drink;
System.out.println("[Coins available : RM 1 [" + coin[0] + "] RM0.50 [ " + coin[1] + "] RM 0.20 [ " + coin[2] + "] RM0.10 [" +coin[3] "] ]");
System.out.println("[Drinks available : Pepsi [" + drink[0] + "] Coke [" + drink[1] + "] Mirinda Orange [" + drink[2] + "] 7up [" + drink[3] + "] ]");
}
/********************showmenu method*****************/
/**************inputcoin method *******************/
public static double inputcoin (double coinInsert)
{
double coinInsert = 0, sumCoininsert = 0;
Scanner sc = new Scanner(System.in);
System.out.println("Insert Coin==>");
double coinInsert = sc.nextDouble();
while (coinInsert == '1' || coinInsert == '0.5' || coinInsert == '0.2' || coinInsert == '0.1')
{
coinInc(coinInsert);
sumCoininsert = sumCoininsert + coinInsert;
while (sumCoinInsert < 1.20)
{
System.out.println("Insert Coin==>");
double coinInsert = sc.nextDouble();
}
}
System.out.println (" Total :" +sumCoinInsert);
}
/********************inputcoin method*******************/
/***************coinInc method************************/
public static double coinInc(int coinInsert)
{
double coinInsert;
Scanner sc = new Scanner(System.in);
switch (coinInsert) {
case coinInsert == '1':
coin[0]++;
break;
case coinInsert == '0.5':
coin[1]++;
break;
case coinInsert == '0.2':
coin[2]++;
break;
case coinInsert == '0.1':
coin[3]++;
break;
default:
System.out.println("Invalid coin");
sumCoininsert = 0;
System.out.println("Insert Coin==>");
double coinInsert = sc.nextDouble();
break;
}
}
/******************coinInc method*********************/
/*****************showdrinks method **************/
public static int showdrinks (int choice)
{
int choice;
System.out.println("Drinks [RM1.20]");
System.out.println("1.Pepsi" "\t2.Coke" "\t3.Mirinda Orange" "\t4.7up");
Scanner sc = new Scanner(System.in);
System.out.println("Choice==>");
int choice = sc.nextInt();
while (choice == '1' || choice == '2' || choice == '3' || choice == '4')
{
if (choice =='1')
{
drink[0]--;
}else if (choice=='2')
{
drink[1]--;
}else if (choice =='3')
{
drink[2]--;
}else (choice == '4')
{
drink[3]--;
}
}
System.out.println("Invalid choice");
System.out.println("Choice==>");
int choice = sc.nextInt();
}
/*****************showdrinks method **************/
/****************showbalance method*******************/
public static double showbalance(double sumCoininsert, double price)
{
double price = 1.2, balance = 0, sumCoininsert;
balance = sumCoininsert - price;
if (balance != 0.00)
{
countbalance (balance);
System.out.println(" Your balance is :" +balance)
System.out.println("\n:" +fifty+ "x50" " " +twenty+ "x20" " " +tenth+ "x10" );
}else //if (balance == 0.00)
{
System.out.println("Your balance is :" +balance);
}
}
/****************showbalance method*******************/
/****************countbalance method******************/
public static double countbalance(double balance)
{
double balance;
int ibalance = (int)(balance);
int fifty = ibalance/50;
int cfifty = ibalance%50;
int twenty = cfifty/20;
int ctwenty = cfifty%20;
int tenth = ctwenty/10;
int ctenth = ctwenty%10;
if ( fifty != 0)
{
coin[1]--;
}
if (twenty != 0)
{
coin[2]--;
}
if (tenth != 0)
{
coin[3]--;
}
}
/*************countbalance method*********************/
/************************contmethod*****************************/
public static String contmethod (char cont)
{
char cont;
Scanner sc = new Scanner(System.in);
System.out.println ("Do you want to continue? y/n :");
//input3 = in.readline();
cont = sc.charAt(0);
while (cont == 'y' || cont == 'Y')
{
continue ;
}
System.out.println("Thank You, Please come again.");
System.exit(0);
}
}
/****************contmethod*******************/
