題目：模擬生產(chǎn)、入庫(kù)、銷(xiāo)售（50分）

 假設(shè)某企業(yè)自產(chǎn)、自存、自銷(xiāo)，需要將工廠生產(chǎn)的各類(lèi)產(chǎn)品不定時(shí)的運(yùn)到倉(cāng)庫(kù)，與此同時(shí)，需要將倉(cāng)庫(kù)中的貨物運(yùn)往超市和商場(chǎng)中進(jìn)行銷(xiāo)售，請(qǐng)編寫(xiě)一個(gè)程序模擬此過(guò)程（主要是存取這個(gè)過(guò)程）。

評(píng)分標(biāo)準(zhǔn)：

1. 倉(cāng)庫(kù)的存量是固定的，可以假設(shè)為一個(gè)常量，比如10。（5分）

2. 倉(cāng)庫(kù)滿(mǎn)的時(shí)候，不能再向倉(cāng)庫(kù)中存貨。（10分）

3. 倉(cāng)庫(kù)空的時(shí)候，不能賣(mài)出貨物。（10分）

4. 存貨和取貨是同時(shí)進(jìn)行的，不要出現(xiàn)先存滿(mǎn)再取完貨再存滿(mǎn)再取完的效果或者存一個(gè)取一個(gè)再存再取這樣的效果。（15分）

5. 思路清晰，輸出工整，編碼規(guī)范，有正確的異常處理。（10分）

用多線(xiàn)程模擬倉(cāng)庫(kù)存儲(chǔ)和銷(xiāo)售的過(guò)程代碼如下：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using System.Threading; 
using System.IO; 
 
namespace MultiThreadStore 
{ 
    class Program 
    { 
        //入口 
        static void Main(string[] args) 
        { 
            Goods goods = new Goods(); 
            Thread storeGoods = new Thread(new ParameterizedThreadStart(store)); 
            Thread sellGoods = new Thread(new ParameterizedThreadStart(sell)); 
            storeGoods.Start(goods); 
            sellGoods.Start(goods); 
            Console.ReadLine(); 
        } 
        //存貨方法 
        private static void store(object obj) 
        { 
            bool storeFlag = true; 
            Random random = new Random(); 
            while (storeFlag) 
            { 
                try 
                { 
                    Goods goods = obj as Goods; 
                    if (goods.Num < goods.MaxNum) 
                    { 
                        goods.Num++; 
                        Console.WriteLine("Store a goods, " + goods.Num + " goods left!"); 
                    } 
                    else  
                    { 
                        Console.WriteLine("The store is full now."); 
                    } 
                    Thread.Sleep(random.Next(500, 1000)); 
                } 
                catch (Exception ex) 
                { 
                    WriteLog(ex); 
                    storeFlag = false; 
                } 
            } 
        } 
        //賣(mài)貨方法 
        public static void sell(object obj)  
        { 
            bool sellFlag = true; 
            Random random = new Random(); 
            while (sellFlag) 
            { 
                try 
                { 
                    Goods goods = obj as Goods; 
                    if (goods.Num > 0) 
                    { 
                        goods.Num--; 
                        Console.WriteLine("Sell a goods, " + goods.Num + " goods left!"); 
                    } 
                    else  
                    { 
                        Console.WriteLine("There are no goods now."); 
                    } 
                    Thread.Sleep(random.Next(1000, 4000)); 
                } 
                catch (Exception ex) 
                { 
                    WriteLog(ex); 
                    sellFlag = false; 
                } 
            } 
        } 
        //打log方法 
        private static void WriteLog(Exception ex) 
        { 
            string logUrl = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory) + "\\MuliThreadStorelog.txt"; 
            if (File.Exists(@logUrl)) 
            { 
                using (FileStream fs = new FileStream(logUrl, FileMode.Append)) 
                { 
                    using (StreamWriter sw = new StreamWriter(fs, Encoding.Default)) 
                    { 
                        try 
                        { 
                            sw.Write(ex); 
                        } 
                        catch (Exception ex1) 
                        { 
                            WriteLog(ex1); 
                        } 
                        finally 
                        { 
                            sw.Close(); 
                            fs.Close(); 
                        } 
                    } 
                } 
            } 
            else 
            { 
                using (FileStream fs = new FileStream(logUrl, FileMode.CreateNew)) 
                { 
                    using (StreamWriter sw = new StreamWriter(fs, Encoding.Default)) 
                    { 
                        try 
                        { 
                            sw.Write(ex); 
                        } 
                        catch (Exception ex1) 
                        { 
                            WriteLog(ex1); 
                        } 
                        finally 
                        { 
                            sw.Close(); 
                            fs.Close(); 
                        } 
                    } 
                } 
            } 
        } 
    } 
    //貨品類(lèi) 
    class Goods  
    { 
        public int Num { get; set; } 
        public int MaxNum { get; set; } 
        public Goods()  
        { 
            Num = 10; 
            MaxNum = 50; 
        }      
    } 
}