标签：变量 nbsp string return bsp -- lin ram span
员工基本工资为5000元，奖金方法+500元，调用该方法之后为什么工资还是5000元？
static void Main(string[] args) { double salary = 5000; jiangJin(salary); Console.WriteLine(salary); Console.ReadKey(); }
public static void jiangJin(double salary) { salary += 500; }
5500的正确代码写法，是不是有点麻烦呢？
static void Main(string[] args) { double salary = 5000; double d = jiangJin(salary); Console.WriteLine(d); Console.ReadKey(); }
public static double jiangJin(double salary) { salary += 500; return salary; }
ref参数：将变量带入一个方法中改变之后在带出方法
注意事项：
ref参数在方法外也就是调用方法之前必须为其赋值
static void Main(string[] args) { double salary = 5000; jiangJin(ref salary); Console.WriteLine(salary); Console.ReadKey(); } public static void jiangJin(ref double salary) { salary += 500; }
ref参数在变量交换中的示例
static void Main(string[] args) { int n1 = 10; int n2 = 100; Program.Test(ref n1, ref n2); Console.WriteLine(n1); Console.WriteLine(n2); Console.ReadKey(); } public static void Test(ref int n1, ref int n2) { int temp = n1; n1 = n2; n2 = temp; }
标签：变量 nbsp string return bsp -- lin ram span
原文地址：https://www.cnblogs.com/huangxuQaQ/p/10729367.html
