在C++中struct也是一种类,他与class具有相同的功能,用法完全相同。 唯一的区别就是:在没有指定成员的访问权限时,struct中默认为public权限,class中默认为private权限。 2.2 C++中的 union 和 class 的区别 union可以定义自己的函数,包括 constructor 以及 destructor。 union支持 public , protected 以及 private 权限。
3、简单枚举和标记枚举的区别? usingSystem;classExample {//Define an Enum without FlagsAttribute.enum SingleHue :short{ None =0, Black =1, Red =2, Green =4, Blue =8};//Define an Enum with FlagsAttribute.[Flags]enum MultiHue :short{ None =0, Black =1, Red =2, Green =4, Blue =...
C++/CX and C++/CLI supportpublic enum classandprivate enum classwhich are similar to the standard C++enum classbut with the addition of the accessibility specifier. Under/clr, the C++11enum classtype is permitted but will generate warning C4472 which is intended to ensure that you really want...
Example 1: Java Enum enum Size { SMALL, MEDIUM, LARGE, EXTRALARGE } class Main { public static void main(String[] args) { System.out.println(Size.SMALL); System.out.println(Size.MEDIUM); } } Run Code Output SMALL MEDIUM As we can see from the above example, we use the enum name...
This example shows how to define a public enum class: C++ // Define the enumpublicenumclassTrafficLight:int{ Red, Yellow, Green };// ... This next example shows how to consume it: C++ // Consume the enum:TrafficLight myLight = TrafficLight::Red;if(myLight == TrafficLight::Green) ...
1、C+基础(enum类型分析)enum在实际中应用比较少,容易被忽略。其实enum和struct、class一样,者B是用户自定义类型。既然是自定义类型,就可以有他的数据成员,还有成员函数!Forexample:enumea=1,b=2,c=4;那么:001:enumee1;/enume不是对象,它是类型,e1才是类型enum的对象!002:ee1;/e是类型enume的简写003:...
An enum is a special "class" that represents a group of constants (unchangeable/read-only variables).To create an enum, use the enum keyword (instead of class or interface), and separate the enum items with a comma:ExampleGet your own C# Server enum Level { Low, Medium, High } You ...
public class Example { public static void Main() { ArrivalStatus status = ArrivalStatus.OnTime; Console.WriteLine("Arrival Status: {0} ({0:D})", status); } } // The example displays the following output: // Arrival Status: OnTime (0) You...
The trait classstd::underlying_type_t<E>can be used to determine the underlying type of an enum. Here is an example of a generic code that casts an enum to its underlying type to print it: template<typenameE>voidprintEnum(E e){//Prefix '+' so that std::cout prints 'char' as a...
usingSystem; [Flags]publicenumPetType { None =0, Dog =1, Cat =2, Rodent =4, Bird =8, Reptile =16, Other =32};publicclassExample{publicstaticvoidMain(){objectvalue;// Call IsDefined with underlying integral value of member.value=1; Console.WriteLine("{0}: {1}",value, Enum.IsDefi...