所以我正在为一个非常简单的大学班级实验室工作,并遇到了一些问题。我的老师没有彻底解释你什么时候使用ref和何时用完。赋值是更改预先编写的方法以使用ref,然后确保它运行,然后将其更改为use out。我得到了ref部分,但是如何重写该方法?以下是程序
using System;
static class Program
{
/// <summary>
/// Purpose: Entry point to your C# program
/// </summary>
static void Main()
{
int iVal1 = 5;
int iVal2 = 7;
//Call the Swap method with two arguments
Swap(ref iVal1, ref iVal2);
Console.WriteLine("Swapped values first {0:D} second {1:D}", iVal1, iVal2);
Console.WriteLine("Press Enter to continue ...");
Console.ReadLine();
}//End Main()
/// <summary>
/// Purpose: To swap the two parameters passed to this method
/// </summary>
/// <param name="num1">num1 int, first number</param>
/// <param name="num2">num2 int, second number</param>
static public void Swap(ref int num1, ref int num2)
{
int tempInt = num1;
num1 = num2;
num2 = tempInt;
}
}//End class Program
答案 0 :(得分:2)
out
当你想要初始化该属性的引用时{/ 1}} 更改