this sounds so stupid, but i need help understanding this #define SOME_CONSTANT 0x002 now, i understand what the define does and all that, but why do i see these type of numbers, the ones that start out with 0x? i''ve noticed they are used for special "system" things, like memory addresses and stuff. they aren''t hex are they? i thought all hex ended in h, like 0AFFh. anyway, i was just wondering.

Yes, they are hexadecimal. Different languages represent hex numbers in different ways; some use a ''0x'' prefix, and some use a ''h'' suffix.

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Martee

Some also put dollar sign infront of them.

$DEADBEEF

(For example ).