示例

// CS1510.cs
public class C
{
   public static int j = 0;

   public static void M(ref int j)
   {
      j++;
   }

   public static void Main ()
   {
      M (ref 2);   // CS1510, can't pass a number as a ref parameter
      // try the following to resolve the error
      // M (ref j);
   }
}