C#第二天

namespace gowater
{
    class Person {
       public int _age;
       public string _name="jj";
    }
    class Program
    {
        static void Main()
        {
            int a = 10;
            Person P=new Person();
            P._age = 45;
            P._name = "xiong";
            Console.WriteLine($"{P._age} is {P._name}");
        }
    }
}