a++和++a 的区别

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

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = 10;
            int b = 11;
            Console.WriteLine("a++="+a++);
            Console.WriteLine("++a="+ ++a);

            Console.WriteLine("b--=" + b--);
            Console.WriteLine("--b=" + --b);

        }
    }
}