| 以文本方式查看主題 - 曙海教育集團論壇 (http://www.martymets.com/bbs/index.asp) -- C語言開發 (http://www.martymets.com/bbs/list.asp?boardid=62) ---- 沒有見過的c語言用法，求救 (http://www.martymets.com/bbs/dispbbs.asp?boardid=62&id=2409) |
| -- 作者：wangxinxin -- 發布時間：2010-12-10 11:39:46 -- 沒有見過的c語言用法，求救 //------------------------------------------------------------------------------------- unsigned char IfInterTimeOK(tagInterTime * ptime) { if(ptime->ucDelay == 0) return 0; ptime->ucCount = (ptime->ucCount) + 1; if(ptime->ucCount >= ptime->ucDelay) { ptime->ucCount = 0; return 1; } return 0; } //----------------------------------------------------------------- typedef struct { unsigned char ucDelay, ucCount; }tagInterTime; // Control the interface control time unsigned char IfInterTimeOK(tagInterTime * ptime);// 1:Action OK //--------------------------------------------------------------------------------- #define __INTERTIME_DECL(x, y) SUBLIB_EXT tagInterTime g_it##x; #define __IT_START(x, y) (g_it##x##.ucDelay = y, g_it##x##.ucCount = y) #define __IT_STOP(x, y) g_it##x##.ucDelay = 0 #define __IT_OK(x, y) IfInterTimeOK(&g_it##x) //------------------------------------------------------------------------------ #define IT_DECL(x) __INTERTIME_DECL(x) #define IT_START(x) __IT_START(x) #define IT_STOP(x) __IT_STOP(x) #define IT_OK(x) __IT_OK(x) #define AAA A, 25 下面這是用法，不知道是什么意思？ IT_START(AAA); if(IT_OK(AAA)) IT_START(AAA); IT_STOP(AAA); 忘c語言高手指教一下 |