Ø Do not use the
underscore as the first character of identifier because many of the identifiers
in the system library start with the underscore.
Ø Use only 31 or less than characters for
identifiers. This helps ensure portability of programs.
Ø Use meaningful
and intelligent variables name.
Ø Do not create
variable names that differ only by one or two letters.
Ø Each variable
used just before they used.
Ø Integer
constants, by default, assume int types.
Ø Don’t use the
lowercase 1 for long as it is usually confused with the number 1.
Ø Use single quote
for character constants and double quote for string constants.
Ø A character is
stored as an integer. It is therefore possible to perform arithmetic operation
on character.
Ø Don’t combine
declarations with executable statement.
Ø Don’t uses the
semicolon at the end of #defines directive.
Ø The character # should
be at the first column.
Ø C doesn’t
provide any warning or indication of over flow.
A variable define
inside a function is local to that function and not available to other function
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