而循环在Java中不重复
我很难让这个while循环重复。 我包括了用户输入“Y”或“N”(“N”表示停止)的前哨值。 在while循环中,它要求用户再次输入哨兵。但是当我运行程序时,这部分没有执行 在控制台中,显示的最后几行是: 想再玩一次吗?(“是”或“否”): 您在老虎机中总共输入了15.00美元 你的总收入是0.00美元 因此,“Y”或“N”的最后一个输入没有执行。您没有在代码中使用“Enter”而循环在Java中不重复,java,while-loop,Java,While Loop,我很难让这个while循环重复。 我包括了用户输入“Y”或“N”(“N”表示停止)的前哨值。 在while循环中,它要求用户再次输入哨兵。但是当我运行程序时,这部分没有执行 在控制台中,显示的最后几行是: 想再玩一次吗?(“是”或“否”): 您在老虎机中总共输入了15.00美元 你的总收入是0.00美元 因此,“Y”或“N”的最后一个输入没有执行。您没有在代码中使用“Enter” import java.util.*; public class Test { public static
import java.util.*;
public class Test
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
Random rand = new Random();
System.out.print("Want to play? ('Y' or 'N'): ");
String want = input.nextLine();
double money;
String word1 = "", word2 = "", word3 = "";
int randInt1, randInt2, randInt3;
double totalMoney = 0.0, totalEarnings = 0.0;
do
{
System.out.print("How much money do you want to enter? $");
money = input.nextDouble();
totalMoney += money;
randInt1 = rand.nextInt(6);
if (randInt1 == 0)
{
word1 = "Cherries";
}
else if (randInt1 == 1)
{
word1 = "Oranges";
}
else if (randInt1 == 2)
{
word1 = "Plums";
}
else if (randInt1 == 3)
{
word1 = "Bells";
}
else if (randInt1 == 4)
{
word1 = "Melons";
}
else
{
word1 = "Bars";
}
randInt2 = rand.nextInt(6);
if (randInt2 == 0)
{
word2 = "Cherries";
}
else if (randInt2 == 1)
{
word2 = "Oranges";
}
else if (randInt2 == 2)
{
word2 = "Plums";
}
else if (randInt2 == 3)
{
word2 = "Bells";
}
else if (randInt2 == 4)
{
word2 = "Melons";
}
else
{
word2 = "Bars";
}
randInt3 = rand.nextInt(6);
if (randInt3 == 0)
{
word3 = "Cherries";
}
else if (randInt3 == 1)
{
word3 = "Oranges";
}
else if (randInt3 == 2)
{
word3 = "Plums";
}
else if (randInt3 == 3)
{
word3 = "Bells";
}
else if (randInt3 == 4)
{
word3 = "Melons";
}
else
{
word3 = "Bars";
}
System.out.println(word1 + " " + word2 + " " + word3);
if (word1.equals(word2) && word1.equals(word3))
{
System.out.printf("You won $%.2f\n", (money * 3));
totalEarnings += (money * 3);
}
else if ((word1.equals(word2) && !word1.equals(word3)) || (!word1.equals(word2) && word1.equals(word3)))
{
System.out.printf("You won $%.2f\n", (money * 2));
totalEarnings += (money * 2);
}
else if ((word2.equals(word1) && !word2.equals(word3)) || (!word2.equals(word1) && word2.equals(word3)))
{
System.out.printf("You won $%.2f\n", (money * 2));
totalEarnings += (money * 2);
}
else if ((word2.equals(word1) && !word2.equals(word3)) || (!word2.equals(word1) && word2.equals(word3)))
{
System.out.printf("You won $%.2f\n", (money * 2));
totalEarnings += (money * 2);
}
else
{
System.out.println("You won $0");
}
System.out.print("\nWant to play again? ('Y' or 'N'): ");
want = input.nextLine();
}
while (want.equalsIgnoreCase("Y"));
System.out.printf("\n\nYou entered a total of $%.2f into the slot machine.\n", totalMoney);
System.out.printf("Your total earnings are $%.2f", totalEarnings);
}
}
然后当你进入你的代码
money = input.nextDouble();
返回一个空字符串
将以下代码放在input.nextDouble()的代码之后
这将消耗您询问下注金额时的“回车”功能。这是否回答了您的问题?只是一个观察,你的代码使用swtices比if和else if更干净()为什么不在循环结束之前打印want的值?@NomadMaker为什么我需要打印want的值?该变量只包含用户是否希望继续播放,因为它显然不包含您认为它的功能,而打印这些内容是调试的一种方式。
want = input.nextLine();
input.nextLine();