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PCD
Also See:
_DATE_
Syntax:
Elements:
Purpose:
Examples:
Example
Files:
Also See:
#DEFINE
Syntax:
Elements:
Purpose:
None
__DATE__
None
This pre-processor identifier is replaced at compile time with the date of the comp ile in
the form: "31-JAN-03"
printf("Software was compiled on ");
printf(__DATE__);
None
None
#DEFINE id text
or
#DEFINE id ( x , y ...) text
id is a preprocessor identifier, text is any text, x , y and so on are local preprocessor
identifiers, and in this form there may be one or more identifiers separated by
commas.
Used to provide a simple string replacement of the ID with the given text from this
point of the program and on.
In the second form (a C macro) the local identifiers are matched up with similar
identifiers in the text and they are replaced with text passed to the macro where it is
used.
If the text contains a string of the form #idx then the result upon evaluation will be
the parameter id concatenated with the string x.
If the text contains a string of the form #idx#idy then parameter idx is concatenated
with parameter idy forming a new identifier.
Within the define text two special operators are supported:
#x is the stringize operator resulting in "x"
x##y is the concatination operator resulting in xy
86
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