值传递与引用传递，函数，局部变量

 

using System;
using System.Collections.Generic;
using System.Linq;

public class Program
{
  public static void Main()
  {
    var x = "111";
    Fibonacci(x);
    Console.WriteLine(x);
    Console.WriteLine($"-------------------------------");

    A s = new A();
    s.Name = "pre";
    Fibonacci2(s);

      Console.WriteLine($"outter x: {s.Name}");

/*
inner x: 222
111
-------------------------------

  inner x: update Name

  outter x: update Name

*/
  }

  private static void Fibonacci(string x)
  {
    x = "222";
    Console.WriteLine($"inner x: {x}");
  }

  private static void Fibonacci2(A a)
  {
    a.Name = "update Name";
    Console.WriteLine($"inner x: {a.Name}");
  }

  public class A{
    public string Name{get;set;}
  }
}