复制代码 代码如下:

static void Main(string[] args)

{

//声明

int value;

string strOutValue;

//调用函数

//函数的参数有两个返回的值

ReturnMulValue(out strOutValue,out value);

Console.WriteLine("Call ReturnMulValue(out string strOut, out int i)");

Console.WriteLine("value = {0:N}", value);//value = 1.00

Console.WriteLine("Out string value = " + strOutValue); //Out string value = out function

//调用函数 http://www.cnblogs.com/roucheng/

//函数原返回值与参数中均得到返回的值

value = ReturnMulValue(out strOutValue);

Console.WriteLine("Call ReturnMulValue(out string strOut)");

Console.WriteLine("value = {0:N}", value);//value = 2.00

Console.WriteLine("Out string value = " + strOutValue);//Out string value = out function 2

//声明

int[] outArr;

//调用函数

//函数返回数组

ReturnMulArr(out outArr, out value);

Console.WriteLine("Call ReturnMulArr(out int[] arr, out int i)");

Console.WriteLine("value = {0:N}", value);//value = 3.00

Console.WriteLine("Out arr value ");

for (int j = 0; j < outArr.Length; j++)

{

Console.Write(outArr[j]);//12345

}

}

/// <summary>

/// 返回多个值，原函数返回空

/// </summary>

/// <param name="strOut">使用out关键字返回的字符串</param>

/// <param name="i">使用out关键字返回的数值</param>

static void ReturnMulValue(out string strOut, out int i)

{

i = 1;

strOut = "out function";

}

/// <summary>

/// 返回多个值，原函数返回数值

/// </summary>

/// <param name="strOut">使用out关键字返回的字符串</param>

/// <returns>原函数直接返回的数值</returns>

static int ReturnMulValue(out string strOut)

{

int i = 2;

strOut = "out function 2";

return i;

}

/// <summary>

/// 返回数组

/// </summary>

/// <param name="arr">使用out关键字返回的数组</param>

/// <param name="i">使用out关键字返回的数值</param>

static void ReturnMulArr(out int[] arr, out int i)

{

arr = new int[5] { 1, 2, 3, 4, 5};

i = 3;

}