using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


// 表达式 - 得到的结果可以是方法 - 委托 = 函数指针
namespace test_5_4
{
    internal class Program
    {
        static void Main(string[] args)
        {
            //int x = 10;
            //int[] Array = new int[5] { 1, 2, 3, 4, 5 };
            //Type t = typeof(int);
            //Console.WriteLine(t);
            new Student();
            Student student = new Student();
            var a =  new { Name = "zhangsan", Age = 34 };
        }
    }

    class Student
    {
        public static int Amount;
        public int ID;
        public string Name;
        public double Add(double x, double y)
        {
            return (x + y); 
        }
        public double Sub(ref double x,ref double y)
        {
            return x - y;
        }
        public void Mul(out double result,double x, double y)
        {
            result = x * y;
        }
        public double Div(double x, double y)
        {
            return x / y;
        }
        public int Div(int x ,int y)
        {
            return x / y;
        }
        public double Div(double x, double y, double z)
        {
            return x / y;
        }
    }

}