C# null值

编程基础网 C#/.NET实例代码

1970-01-01

using System;namespace CalculatorApplication {class NullablesAtShow {static void Main(string[] args) {

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using System;

namespace CalculatorApplication {

   class NullablesAtShow {

      static voID Main(string[] args) {
         int? num1 = null;
         int? num2 = 45;
         double? num3 = new double?();
         double? num4 = 3.14157;

         bool? boolval = new bool?();

         // display the values
         Console.Writeline("Nullables at Show: {0}, {1}, {2}, {3}", num1, num2, num3, num4);
         Console.Writeline("A Nullable boolean value: {0}", boolval);
         Console.Readline();
      }
   }
}