|The names of variables in the C++ language are referred to as
identifiers. The best naming convention
is to choose a variable name that will tell the reader of the program what the variable represents. Variables that describe the data stored at that particular memory location are called
Rules for naming variables:
Variable names in Visual C++ can range from 1 to 255 characters. To make variable names portable to other environments stay within a 1 to 31 character range.
All variable names must begin with a letter of the alphabet or an
underscore( _ ). For beginning programmers, it may be
easier to begin all variable names with a letter of the alphabet.
After the first initial letter, variable names can also contain letters and numbers.
No spaces or special characters, however, are allowed.
Uppercase characters are
distinct from lowercase characters. Using all uppercase
letters is used primarily to identify constant variables.
You cannot use a C++ keyword
(reserved word) as a variable name.
Some programmers use an underscore in variable names to separate parts of the name, such as
shipping_weight. Others prefer a "capital style" notation, such as
shippingWeight to separate parts of the name.
NEVER use uppercase for every letter in a
variable name, because uppercase names are reserved for
|Samples of acceptable variable names:
|| Samples of unacceptable variable names: