C???????
????????? ???????[ 2010/5/26 17:00:11 ] ????????
????C?????У?????????????
????1. #include <>or" " ???????滻
????2.#define <identifier> <replacement token list> ?????滻??object-like??
?????????滻??????????????????replacement token list
????3.#define <identifier>(<parameter list>) <replacement token list> ?????滻(function-like)
?????????滻 <identifier>(<parameter list>)????????κο?????????????????????????п??
?????????滻?????????????????????????????????滻?????????--???????????do{}while(0)?????
???????????????β?????С?????????if-else???????????????
????4. #ifdefine?????????????
?????????б???????????##??#????á?
????##????????????????
#define MYCASE(item??id)
case id:
????item##_##id = id;
break
switch(x) {
????MYCASE(widget??23);
}
MYCASE(widget??23); ??????
case 23:
????widget_23 = 23;
break;
????#??????????????
#define QUOTEME(x) #x
printf("%s
"?? QUOTEME(1+2));
?滻??==>
printf("%s
"?? "1+2");
?????????##??#???????????????????????????滻??????????
???????????????????????????ü??????????
???????????????????
????-----------------------------------------------------------
??????
???·???
??????????????????
2023/3/23 14:23:39???д?ò??????????
2023/3/22 16:17:39????????????????????Щ??
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2021/5/8 17:01:11