C# 引用类似 C++ 别名

这样：ref int b = ref a;

int a = 100;
ref int b = ref a;
b = 111;
Console.WriteLine($"a = {a}, b = {b}");
Console.WriteLine("a = {0}, b = {1}", a, b);

输出：

a = 111, b = 111
a = 111, b = 111