[Note] C # basic introduction -- C # naming rules for identifiers,

[Note] C # basic introduction -- C # naming rules for identifiers,

The variable name, constant name, class name, and method name in the program are calledIdentifier. C # There is a set of naming rules for Identifiers. If the naming rules are not followed, an error will occur. The rules are described as follows:

 

① An identifier can only consist of letters, numbers, and underscores. It cannot contain spaces or other characters.

Incorrect identifier declaration:

String $ user; // other characters are used when an error occurs.

② The variable name cannot start with a number.

Incorrect identifier declaration:

Double 6 h; // The error code starts with a number.

③ Keywords cannot be used as variable names.

Incorrect identifier declaration:

Char static; // an error occurs when the keyword static is used as the variable name.

The above is taken from MOOC course C # getting started with development