C#基礎的流程語句（九九乘法表）（百錢白雞）

for循環，

格式：for (int i = 0; i < length; i++)
            {
               
            }

九九乘法
            //double money = 10000;
            //for (int i = 0; i < 10; i++)
            //{
            //    money = money + money * 0.0038;
            //}
            //Console.WriteLine(money);
            //for (int i = 1; i <= 9; i++)
            //{
            //    for (int j = 1; j <= i; j++)
            //    {
            //        Console.Write(j+"*"+i+"="+(i*j)+" ");
            //    }
            //    Console.WriteLine();
            //}

 DO while循環

格式：do
            {
               
            } while (true);
        A:
            Console.Write("請輸入用戶名：");
            string user = Console.ReadLine();
            Console.Write("請輸入密碼：");
            string password = Console.ReadLine();
            bool flag = true;
            if (user == "admin" && password == "111")
            {
                flag = true;
            }
            else
            {
                flag = false;
                Console.WriteLine("用戶名與密碼不正確！");
                goto A;
            }
            while (flag)
            {
                Console.WriteLine("歡迎進入！");
                return;
            }

買雞問題
            int count=0;          
            for (int i = 0; i < 20; i++)
            {
                for (int j = 0; j < 33; j++)
                {
                   int z=100-i-j;
                   if (5*i+3*j+z/3.0==100)
                   {
                       Console.WriteLine("公雞：{0} 母雞：{1} 小雞{2}", i, j, z);
                       count++;

                   }
                }
            }
            Console.WriteLine("一共有{0}可能",count);