using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



namespace 求班级分数平均值

{

    class Program

    {

        static void Main(string[] args)

        {   

            int sum=0;

            Console.WriteLine("请输入班级人数:");

            int Qty = int.Parse(Console.ReadLine());

            for(int i=1;i<=Qty;i++)

            {

                Console.WriteLine("请输入第{0}学生的分数", i);



                try

                {   

                    Convert.ToDecimal(Console.ReadLine());

                }

                catch (Exception)

                {

                    Console.WriteLine("输入的不是数字，请重新输入！");

                }        //判断输入的是否为数字



                int Sore =int.Parse(Console.ReadLine());//?为何这里读出Readline()报错?

                sum=sum+Sore;

            }

            int Avg = sum / Qty;  //求分数的平均值

            Console.WriteLine("班级的平均成绩为:{0}",Avg);

            Console.ReadLine();

        }

    }