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();

      }
   }
}

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