C#按输出传递参数

using System;

namespace CalculatorApplication {

   class NumberManipulator {

      public voID getValue(out int x ) {
         int temp = 5;
         x = temp;
      }

      static voID Main(string[] args) {
         NumberManipulator n = new NumberManipulator();

         /* local variable deFinition */
         int a = 100;

         Console.Writeline("Before method call, value of a : {0}", a);

         /* calling a function to get the value */
         n.getValue(out a);

         Console.Writeline("After method call, value of a : {0}", a);
         Console.Readline();

      }
   }
}