An identifier is a combination of alpha numeric characters,
the first being the letter of an alphabet or an underline, and the remaining being any letter of the alphabet, any numeric digit, or the underline.
An Identifier is a name for a variable, type, type member, template, class, function, namespace etc and is usually limited to letters, digits and underscores..
1. identifiers beginning with a letter 2. identifiers beginning with an underscore
all keywords
Yes they is different, C language are case-sensitive.
C, o, u, e
C, o, u, e
Identifiers are a bit more generic in the context of programming. If you mean, in terms of the C languages (C, C++, C#), the question is the reverse...keywords may NOT be used as identifiers. For example, you cannot use keywords such as "int", "float", "double", etc. as the names of variables or objects.
An identifier is a name. All names must be declared with a type.
If you mean 'are identifier of an object and nameof an object synonyms?', then yes, they are.
In order to claim compliance with ANSI C standards, the minimum maximum for internal identifiers and macros is 63 characters, and external identifiers is 31 characters. Vendors are encouraged to avoid imposing a maximum value whenever possible.
Not o,e,r,u
No. Keywords are reserved and cannot be used as identifiers. However, C/C++ is case-sensitive. So although register is a reserved keyword, Register is not.
If you are referring to the identifiers of more than one site, it would be "sites' identifiers". Similarly, a "farmer's market" would be a market of a single farmer, a "farmers' market" would be a plurality of farmers forming a market.