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;         }