Ada 95 Reference Manual

2.3 Identifiers

Identifiers are used as names.

Syntax

identifier ::=
identifier_letter {[underline] letter_or_digit}

letter_or_digit ::= identifier_letter | digit

An identifier shall not be a reserved word.

Static Semantics

All characters of an identifier are significant, including any underline character. Identifiers differing only in the use of corresponding upper and lower case letters are considered the same.

Implementation Permissions

In a nonstandard mode, an implementation may support other upper/lower case equivalence rules for identifiers, to accommodate local conventions.

Examples

Examples of identifiers:

Count X Get_Symbol Ethelyn Marion

Snobol_4 X1 Page_Count Store_Next_Item