练习 C#---函数（三角形、卖羊）

/// <summary>
/// 打印三角形
/// </summary>
        public void Sanjiao() 
        {
             Console.Write("请输入行数：");
            int a = int.Parse(Console.ReadLine());
            for (int i = 1; i <= a; i++)
            {
                for (int j = 1; j <= i; j++) 
                {
                    Console.Write("@");
                }
                Console.WriteLine();
            }
            Console.ReadLine();
        }
　　　　static void Main(string[] args)
        {
            Program hanshu = new Program();
            hanshu.Sanjiao();
            Console.ReadLine();
　　　　}

/// <summary>
/// 输入一个参数，自动打印三角形
/// </summary>
/// <param name="a"></param>
        public void Sanjiao(int a)
        {
            for (int i = 1; i <= a; i++)
            {
                for (int j = 1; j <= i; j++)
                {
                    Console.Write("@");
                }
                Console.WriteLine();
            }
            Console.ReadLine();
        }
　　　　 static void Main(string[] args)
        {
            Program hanshu = new Program();
            Console.Write("请输入行数：");
            int a = int.Parse(Console.ReadLine());
            hanshu.Sanjiao(a);
            Console.ReadLine();
        }
    }
}

/// <summary>
/// 每过一个村卖掉一半零1只羊，过了7个村，还剩2只羊，问最初多少只羊
/// </summary>
/// <returns></returns>
        public int sheep()
        {
            int sum = 0;
            for (int v=7;v>=0;v--)
            {
                sum = 2 * (sum + 1);
                Console.WriteLine("第"+v+"个村" + "有"+sum+"只羊");
            }
            return sum;
        }
 　　　　static void Main(string[] args)
        {
            Program hanshu = new Program();
            Console.WriteLine("最初有"+hanshu.sheep()+"只羊");
            Console.ReadLine();
        }
    }
}