what is #define XYZ ((DWORD)0x000000FAL)

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VisualC++

As Iam new to vc++,
can any one help me what is
#define XYZ ((DWORD)0x000000FAL) ?
Thanks.

Posted 19-Jul-12 4:14am

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OriginalGriff · Accepted Answer · 2012-07-19T04:27:00

Solution 1

#define is a pre-compilation instruction which defines a symbol to be a specific value. It's similar to a variable declaration but you can't change it. (There is more to it than that, see #define[^] for a lot more details)

XYZ is the symbol that you are defining - the variable name if you want.

((DWORD)0x000000FAL) is the value that you are defining XYZ to be, in this case a DWORD constant value that fits in a LONG and has teh hexadecimal value FA

Each time the compiler sees XYZ it will replace it with ((DWORD)0x000000FAL)

Posted 19-Jul-12 4:27am

OriginalGriff

Comments

Richard MacCutchan 19-Jul-12 11:59am

Definitely not the hexadecimal value sweet FA. 8)

OriginalGriff 19-Jul-12 12:05pm

I used to work in Alton where sweet Fanny Adams was murdered - http://en.wikipedia.org/wiki/Fanny_Adams - and used to eat in the Leathern Bottle when it was a very good Italian restaurant.

Richard MacCutchan 19-Jul-12 12:11pm

My only knowledge of Alton was watching amateur cycle racing in the town when my son was into racing. I was not aware that was where Fanny was done in - more information to clutter my overloaded brain.