How to use structures and enumerations in C++
This article mainly explains "how to use the structures and enumerations in C++", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn how to use structures and enumerations in C++.
1. The use of struct
Use struct to define a structure:
Struct Book
{
Char bookName [10]
Char publisher [20]
Char isbn [11]
} Book
Definition of structural body variables:
Struct Book tmpBook
To access the data in a structure variable:
TmpBook.isbn
TmpBook.publisher
TmpBook.bookName
2. The use of enum
Use enum to define enumerations:
Enum CMD
{
Quit = 0, add = 1, search, sort
}
Define enumerated variables:
CMD cmd
Assign values to enumerated variables:
Int input = 0
Cmd = (CMD) input
You can also assign values like this:
Cmd = quit
To access the value of an enumerated variable, you can use the.
Some people may want to know the difference between structures and classes. In C++, structures have no member functions, that is, only properties, but no functions; while classes have member functions and member variables. Another thing is that the default access property is different. In the structure, the default access property is public, while the class defaults to private if it is not declared.
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