C# 重载加号运算符计算两个对象的和

C# 重载加号运算符计算两个对象的和

public class ValidFloat
{
   private float value;
   private bool  valid;
	
   public ValidFloat (float value, bool valid)
   {
      this.value = value;
      this.valid = valid;
   }
	
   public static ValidFloat operator+ (ValidFloat vf1, ValidFloat vf2)
   {
      return new ValidFloat (vf1.value + vf2.value, vf1.valid & vf2.valid);
   }
	
   public static void Main( )
   {
      ValidFloat vf1 = new ValidFloat ( 1.1f, true);
      ValidFloat vf2 = new ValidFloat ( 2.2f, false);
      ValidFloat vf3 = vf1 + vf2;
      Console.WriteLine ("Value = " + vf3.value + " Valid: " + vf3.valid);
   }
			
}