In addition to __LINE__
and __FILE__
(see “Line Control ”), ANSI
C provides the __DATE__,
__TIME__ and
__STDC__ predefined
macros. Table 7-1 “Predefined Macros ” describes the
complete set of macros that are predefined to produce special information.
They may not be undefined.
Table 7-1 Predefined Macros
Macro Name | Description |
|---|
__DATE__ | Produces the date of compilation in the
form Mmm dd yyyy. |
__FILE__ | Produces the name of the file being compiled. |
__LINE__ | Produces the current source line number. |
__STDC__ | Produces the decimal constant 1, indicating
that the implementation is standard-conforming. |
__TIME__ | Produces the time of compilation in the
form hh:mm:ss. |
 |
| |
|
 | NOTE: __DATE__,
__TIME__, and
__STDC__ are
only defined in ANSI mode. |
|
| |
|
