const 与 readonly的差别1

using System;



class Program {

    
    const int PRICE1 = PRICE2 * 2;
    const int PRICE2 = 100;
    
    static readonly int PRICE3 = PRICE4* 2;
    static readonly int PRICE4 = 100;
   
    static void Main(string[] args) {
    
    Console.WriteLine($"PRICE1 = {PRICE1}, PRICE2 = {PRICE2} PRICE3 = {PRICE3}  PRICE4 = {PRICE4}");
      
    //const 属于编译时，所以PRICE1为200
    //PRICE3 属于运行时，所以还是为0
    //输出结果
    //PRICE1 = 200, PRICE2 = 100 PRICE3 = 0  PRICE4 = 100

    }
}