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Javaでif else文の助けが必要です。アイテムが0になったら "申し訳ありません、在庫切れ"と言うプログラムが必要です。私は試してみましたが、 "在庫切れです"というメッセージは印刷されませんでした。プログラムは、アイテムが在庫切れであることをユーザに知らせる。ありがとうございました。ただ、この通過するJavaのelse文の場合
import java.util.Scanner;
public class VendingMachine {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int Chips = 5;
int Cookies = 4;
int Candies = 3;
double ChipsPrice = 1.25;
double CookiesPrice = 0.85;
double CandiesPrice = 0.95;
Scanner choice = new Scanner(System.in);
Scanner moneyIn = new Scanner(System.in);
while (true) {
double Change = 0;
double Amount = 0;
double Money = 0;
System.out.println("Welcome to the Vending Machine");
System.out.println("Please insert Money");
Amount = moneyIn.nextDouble();
//Make an if statements, such as if moneyIn equals 5 quarters then Amount = 5*0.25
//Ask how many quarters how many nickels how many dimes
System.out.println("What snack would you like?");
System.out.println("Potato Chips: $" + ChipsPrice + " " + Chips + " left");
System.out.println("Cookies: $" + CookiesPrice + " " + Cookies + " left");
System.out.println("Candies: $" + CandiesPrice + " " + Candies + " left");
String which = choice.nextLine();
if (which.equals("Potato Chips")) {
System.out.println("You selected Potato Chips: $" + ChipsPrice + " " + Chips + " left");
if (Amount < ChipsPrice) {
System.out.println("Not enough money inserted");
if (Chips == 0) ;
System.out.println("Sorry, out of stock");
} else {
Chips = Chips - 1;
Change = ChipsPrice - Amount;
System.out.println("Please take your chips ");
System.out.println("Your change is " + Change);
}
} else if (which.equals("Cookies")) {
System.out.println("You selected Cookies: $" + CookiesPrice + " " + Cookies + " left");
Cookies = Cookies - 1;
if (Amount < CookiesPrice) {
System.out.println("Not enough money inserted");
if (Cookies == 0)
System.out.println("Sorry, out of stock");
} else {
Cookies = Cookies - 1;
Change = CookiesPrice - Amount;
System.out.println("Please take your cookies");
System.out.println("Your change is " + Change);
}
} else if (which.equals("Candies")) {
System.out.println("You selected Candies: $" + CandiesPrice + " " + Candies + " left");
if (Amount < CandiesPrice) {
System.out.println("Not enough money inserted");
if (Cookies == 0)
System.out.println("Sorry, out of stock");
} else {
Candies = Candies - 1;
Change = CookiesPrice - Amount;
System.out.println("Please take your candies");
System.out.println("Your change is " + Change);
}
} else {
System.out.println("Please select one of the snacks below");
}
}
}
}
'if(Chips == 0);'の最後にあるセミコロンを削除します。そして、インデントに注意してください。 – shmosel
それ以外の場合は、商品ごとに条件が異なる必要があります。常に(Cookies == 0)にすることはできません。 –
if stmtsが間違った場所にあることもある – Gab