如何在while循环中修复此计数器？ //姓名：贾斯汀 导入java.util.Scanner； 公营酒店 { 公共静态void main（字符串[]args） { 扫描仪键盘=新扫描仪（System.in）； 内部楼层，房间号，房间号，房间号，空房间号，房间号T=0，房间号NOT=0； 双重职业； 系统输出打印（“输入酒店楼层数（必须至少输入1）：”； 地板=键盘.nextInt（）； 而（楼层>0） { 系统输出打印（“输入楼层+楼层+”：）上的房间数量； roomNo=keyboard.nextInt（）； 如果（房间号

您好，此程序用于计算酒店的入住率、房间总数、已入住房间总数和空置房间总数。输入是楼层数、每层的房间数以及给定楼层上已占用的房间数。输入数据后，入住率始终为0.0，这是我的问题。我觉得问题在于我的变量计数器：occRoomsT和roomNoT。

只需制作

  //Name: Justin 

  import java.util.Scanner;

  public class hotelOccupancy
  {

  public static void main(String[] args)
  {

  Scanner keyboard = new Scanner(System.in);
  int floors, roomNo, occRooms, emptyRooms, occRoomsT = 0, roomNoT = 0;
  double occupancyRate;

  System.out.print("Enter the amount of floors in the hotel(must enter at least 1): ");
    floors = keyboard.nextInt();

  while(floors > 0)
     {
  System.out.print("Enter the amount of rooms on floor " + floors + ":");
    roomNo = keyboard.nextInt();

     if(roomNo < 10)
     {
  System.out.println("There is a minimum of 10 rooms per floor");
  System.out.print("Enter the amount of rooms on floor " + floors + ":");
    roomNo = keyboard.nextInt();
     }

  System.out.print("Enter the amount of rooms on floor " + floors + " that are occupied: ");
    occRooms = keyboard.nextInt();

     if(occRooms < 0 || occRooms > roomNo)
     {
  System.out.println("Please enter a valid number of occupied rooms");
  System.out.print("Enter the amount of rooms on floor " + floors + " that are occupied: ");
    occRooms = keyboard.nextInt();
     }

   occRoomsT = occRoomsT + occRooms;
   roomNoT = roomNoT + roomNo;  
   floors--;
   }

  occupancyRate = occRoomsT / roomNoT;
  emptyRooms = roomNoT - occRoomsT;

  System.out.println("The total amount of rooms is: " + roomNoT);
  System.out.println("The total amount of occupied rooms is: " + occRoomsT);
  System.out.println("The occupancy rate is: " + occupancyRate);
  System.out.println("The amount of vacant rooms is: " + emptyRooms);

  }
  }

---

房间总数始终为整数，将其声明为双精度不是一种好做法，与整数相比，这会占用更多空间。

您正在执行整数算术，而不是浮点算术。在执行除法之前，将变量转换为

float

或

double

。顺便说一句，如果您编写了一个程序，您可能会自己发现问题（这与循环完全无关）。@SJuan76我将emptyRooms、roomNoT和occRoomsT变量更改为double，现在程序工作正常。非常感谢。

occupancyRate = ((double)occRoomsT) / roomNoT;