Sample Code for C ++ enum Enumeration

The use of enum enumeration in C ++ programming language is hard to grasp. Today, we have provided four simple code examples to help you understand the specific meaning and application methods of the C ++ enum enumeration, so as to facilitate your practical application in the future.

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C ++ enum enumeration format:

Enum <Enumeration type name >{< enumeration table >}; (see example 1)

Enum {<enumeration table >}< variable table>; (see example 2)

The first C ++ enum enumeration value corresponds to an integer. Generally, the first enumeration value corresponds to a constant value of 0, which is then low. (special usage Example 3 Example 4)

Enum bool {false, true}; bool type is C ++ pre-defined Enumeration

Example code of C ++ enum enumeration:

 

  
# Include <iostream. h>
  
 
  
Void main ()
  
...{
  
// Example 1
  
Enum day... {Sun, Mon, Tue, Wed, Thu, Fri, Sat}; // defines the enumeration of a day
  
Day d = Sun;
// D can only be equal to one of "Sun, Mon, Tue, Wed, Thu, Fri, Sat". There is no other value!
  
Cout <"value is" <d <endl;
  
 
  
// You can also define multiple variables.
  
Enum day... {Sun, Mon, Tue, Wed, Thu, Fri, Sat };
  
Day d1, d2, d3;
  
D1 = Thu; d2 = Sat; d3 = Tue;
  
Cout <"d1 & d2 & d3" <d1 <"" <d2 <"" <d3 <endl;
  
 
  
// Example 2
  
Enum... {Sun, Mon, Tue, Wed, Thu, Fri, Sat} d;
  
D = Mon;
  
Cout <"value is" <d <endl;
  
 
  
// Example 3
  
Enum... {Sun = 10, Mon, Tue, Wed, Thu, Fri, Sat} d1, d2, d3, d4;
  
D1 = Sun; d2 = Mon; d3 = Tue; d4 = Wed;
  
Cout <d1 <"" <d2 <"" <d3 <"" <d4 <endl;
// Output 10 11 12 13
  
 
  
// Example 4
  
Enum... {Sun = 10, Mon = 1, Tue, Wed, Thu, Fri, Sat} d1, d2, d3, d4;
  
D1 = Sun; d2 = Mon; d3 = Tue; d4 = Wed;
  
Cout <d1 <"" <d2 <"" <d3 <"" <d4 <endl;
// Output 10 1 2 3
  
}
 

The above is an introduction to the C ++ enum enumeration.