瓶子计数程序，切换报表查询，找到最大数量
本文关键字：查询 最大数 报表 程序 瓶子 | 更新日期: 2023-09-27 18:20:31
我的程序记录了4个房间收集的瓶子数量。我是C#的初学者，但过去也学过java。
我不会使用LINQ，我不会使用Arrays。仅切换语句（对不起，我知道它效率低下）
我的程序必须记录用户输入的瓶子数量，当用户键入"退出"时，程序将吐出所有房间的瓶子数量并确定瓶子最多的房间为获胜者。
我被这个开关语句卡住了，我找不到启动我的房间（房间1、房间2、房间3、房间4）的方法，它说变量房间1-4没有分配。我应该能够通过使用开关不断地将瓶子添加到房间中。
当我输入退出时，程序可以吐出房间收集的所有瓶子，并找到瓶子最多的房间。
谢谢你抽出时间，我很感激这个社区对我的帮助。
namespace BottleDrive1
{
class Program
{
static void Main(string[] args)
{//Initialize 4 rooms.
int room1 = 0;
int room2 = 0;
int room3 = 0;
int room4 = 0;
//Start of while loop to ask what room your adding into.
while (true)
{
Console.Write("Enter the room you're in: ");
//If user enters quit at anytime, the code will jump out of while statement and enter for loop below
string quit = Console.ReadLine();
if (quit == "quit")
//Break statement allows quit to jump out of loop
break;}}
private void SetRoom(int room, int value)
{
switch (room)
{
case 1:
room1 = value;
break;
case 2:
room2 = value;
break;
case 3:
room3 = value;
break;
case 4:
room4 = value;
break;
}
}
public int GetRoom(int room)
{
int count = int.Parse(Console.ReadLine());
switch (room)
{
case 1:
room1 += count;
break;
case 2:
room2 += count;
case 3:
room3 += count;
break;
case 4:
room4 += count;
break;
}
}
}
//This for statement lists the 4 rooms and their bottle count when the user has entered quit. An alternative to below
/*for (int i = 0; i < rooms.Length; ++i)
Console.WriteLine("Bottles collected in room {0} = {1}", i + 1, rooms[i]);*/
/* int maxValue = 0;//initiates the winner, contructor starts at 0
int maxRoomNumber = 0;//initiates the room number that wins
for (int i = 0; i < room[i].Length; ++i)//This loop goes through the array of rooms (4)
{
if (room[i] > maxValue)//Makes sure that the maxValue is picked in the array
{//Looking for room number for the
maxValue = room[i];
maxRoomNumber = i + 1;
}//Writes the bottles collected by the different rooms
Console.WriteLine("Bottles collected in room {0} = {1}", i + 1, rooms[i]);
}
//Outputs winner
Console.WriteLine("And the Winner is room " + maxRoomNumber + "!!!");
*/
}
程序的最后一部分是我试图找到最大值，因为我使用了一个数组来启动。我不能使用数组。
只需将int声明移动到Main方法上方，如下所示：
class Program
{
int room1 = 0;
....
static void Main(string[] args)
{
....
}
}
下面是一个使用class保存每个房间信息的示例。使用类的原因是，如果您的程序将来需要更改以收集更多信息，则不必跟踪另一个数组，只需向类添加属性即可。
各个房间现在被保存在一个列表中，而不是一个数组中，只是为了显示不同的结构。
这是新的房间等级：
public class Room
{
public int Number { get; set; }
public int BottleCount { get; set; }
public Room(int wNumber)
{
Number = wNumber;
}
}
这是这个程序的新版本。请注意，添加了对最终用户输入的值的额外检查，以防止在尝试获取当前房间或将用户输入的数值解析为int时出现异常：
static void Main(string[] args)
{
const int MAX_ROOMS = 4;
var cRooms = new System.Collections.Generic.List<Room>();
for (int nI = 0; nI < MAX_ROOMS; nI++)
{
// The room number is 1 to 4
cRooms.Add(new Room(nI + 1));
}
// Initializes the room that wins
//Start of while loop to ask what room your adding into.
while (true)
{
Console.Write("Enter the room you're in: ");
//If user enters quit at anytime, the code will jump out of while statement and enter for loop below
string roomNumber = Console.ReadLine();
if (roomNumber == "quit")
{
//Break statement allows quit to jump out of loop
break;
}
int room = 0;
if (int.TryParse(roomNumber, out room) && (room < MAX_ROOMS) && (room >= 0)) {
Room currentRoom;
currentRoom = cRooms[room];
Console.Write("Bottles collected in room {0}: ", currentRoom.Number);
int wBottleCount = 0;
if (int.TryParse(Console.ReadLine(), out wBottleCount) && (wBottleCount >= 0))
{
// This line adds the count of bottles and records it so you can continuously count the bottles collected.
currentRoom.BottleCount += wBottleCount;
}
else
{
Console.WriteLine("Invalid bottle count; value must be greater than 0");
}
}
else
{
Console.WriteLine("Invalid room number; value must be between 1 and " + MAX_ROOMS.ToString());
}
}
Room maxRoom = null;
foreach (Room currentRoom in cRooms) //This loop goes through the array of rooms (4)
{
// This assumes that the bottle count can never be decreased in a room
if ((maxRoom == null) || (maxRoom.BottleCount < currentRoom.BottleCount))
{
maxRoom = currentRoom;
}
Console.WriteLine("Bottles collected in room {0} = {1}", currentRoom.Number, currentRoom.BottleCount);
}
//Outputs winner
Console.WriteLine("And the Winner is room " + maxRoom.Number + "!!!");
}