宏也是无符号整数吗 define和unsigned int在单片机中都是定义的意...
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\u62d3\u5c55\u8d44\u6599\uff1a
\u8ba1\u7b97\u673a\u91cc\u7684\u6570\u662f\u7528\u4e8c\u8fdb\u5236\u8868\u793a\u7684\uff0c\u6700\u5de6\u8fb9\u7684\u8fd9\u4e00\u4f4d\u4e00\u822c\u7528\u6765\u8868\u793a\u8fd9\u4e2a\u6570\u662f\u6b63\u6570\u8fd8\u662f\u8d1f\u6570\uff0c\u8fd9\u6837\u7684\u8bdd\u8fd9\u4e2a\u6570\u5c31\u662f\u6709\u7b26\u53f7\u6574\u6570\u3002\u5982\u679c\u6700\u5de6\u8fb9\u8fd9\u4e00\u4f4d\u4e0d\u7528\u6765\u8868\u793a\u6b63\u8d1f\uff0c\u800c\u662f\u548c\u540e\u9762\u7684\u8fde\u5728\u4e00\u8d77\u8868\u793a\u6574\u6570\uff0c\u90a3\u4e48\u5c31\u4e0d\u80fd\u533a\u5206\u8fd9\u4e2a\u6570\u662f\u6b63\u8fd8\u662f\u8d1f\uff0c\u5c31\u53ea\u80fd\u662f\u6b63\u6570\uff0c\u8fd9\u5c31\u662f\u65e0\u7b26\u53f7\u6574\u6570\u3002
\u8ba1\u7b97\u673a\u4e2d\u7684\u6574\u6570\u5206\u4e3a\u4e24\u7c7b\uff1a\u4e0d\u5e26\u7b26\u53f7\u4f4d\u7684\u6574\u6570\uff08unsigned integer\uff0c\u4e5f\u79f0\u4e3a\u65e0\u7b26\u53f7\u6574\u6570\uff09\uff0c\u6b64\u7c7b\u6574\u6570\u4e00\u5b9a\u662f\u6b63\u6574\u6570\uff1b\u5e26\u7b26\u53f7\u4f4d\u7684\u6574\u6570\uff08signed integer\uff09\uff0c\u6b64\u7c7b\u6574\u6570\u53ef\u4ee5\u8868\u793a\u6b63\u6574\u6570\uff0c\u53c8\u53ef\u4ee5\u8868\u793a\u8d1f\u6574\u6570\u3002
\u65e0\u7b26\u53f7\u6574\u6570\u5e38\u7528\u4e8e\u8868\u793a\u5730\u5740\u3001\u7d22\u5f15\u7b49\u6b63\u6574\u6570\uff0c\u5b83\u4eec\u53ef\u4ee5\u662f8\u4f4d\u300116\u4f4d\u300132\u4f4d\u300164\u4f4d\u751a\u81f3\u66f4\u591a\u30028\u4e2a\u4e8c\u8fdb\u5236\u8868\u793a\u7684\u6b63\u6574\u6570\u5176\u53d6\u503c\u8303\u56f4\u662f0~255\uff08 -1\uff09\uff0c16\u4f4d\u4e8c\u8fdb\u5236\u4f4d\u8868\u793a\u7684\u6b63\u6574\u6570\u5176\u53d6\u503c\u8303\u56f4\u662f0~65535\uff08 -1\uff09\uff0c32\u4f4d\u4e8c\u8fdb\u5236\u4f4d\u8868\u793a\u7684\u6b63\u6574\u6570\u5176\u53d6\u503c\u8303\u56f4\u662f0~ -1\u3002
\u6709\u7b26\u53f7\u548c\u65e0\u7b26\u53f7\u7684\u5dee\u522b\uff1a
int\u662f\u6709\u7b26\u53f7\u7684\uff0cunsigned\u662f\u65e0\u7b26\u53f7\u7684\u3002
\u5b83\u4eec\u6240\u5360\u7684\u5b57\u8282\u6570\u5176\u5b9e\u662f\u4e00\u6837\u7684\uff0c\u4f46\u662f\u6709\u7b26\u53f7\u7684\u9700\u8981\u5b89\u6392\u4e00\u4e2a\u4f4d\u7f6e\u6765\u8868\u8fbe\u6211\u8fd9\u4e2a\u6570\u503c\u7684\u7b26\u53f7\uff0c\u56e0\u6b64\u8bf4\u5b83\u80fd\u8868\u793a\u7684\u7edd\u5bf9\u503c\u5c31\u8981\u6bd4\u65e0\u7b26\u53f7\u7684\u5c11\u4e00\u534a\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6211\u4eec\u6709\u4e00\u4e2a1\u4e2a [1] \u5b57\u8282\u7684\u6574\u6570\uff08\u867d\u7136\u8fd9\u79cd\u7c7b\u578b\u4e0d\u5b58\u5728\uff09\uff0c\u90a3\u4e48\u65e0\u7b26\u53f7\u7684\u5c31\u662f\u8fd9\u6837\uff1a00000000\uff5e11111111 \u8fd9\u4e2a\u5c31\u662f\u65e0\u7b26\u53f7\u7684\u8303\u56f4\u3002
\u4e00\u4e2a\u5b57\u8282\u662f8\u4f4d\uff0c \u6709\u7b26\u53f7\u7684\u6570\uff0c\u56e0\u4e3a\u7b2c\u4e00\u4e2a\u4f4d\u8981\u7528\u6765\u8868\u793a\u7b26\u53f7\uff0c\u90a3\u4e48\u5c31\u53ea\u5269\u4e0b7\u4e2a\u4f4d\u7f6e\u53ef\u4ee5\u7528\u6765\u8868\u793a\u6570\u4e860000000\uff5e1111111\u56e0\u4e3a\u6709\u7b26\u53f7\uff0c\u6240\u4ee5\u8fd8\u53ef\u4ee5\u8868\u793a\u8303\u56f4\uff1a-1111 111 \uff5e +1111 111\u3002
define \u53ea\u662f\u5b9a\u4e49\u4e00\u4e2a\u540d\u79f0\uff0c\u6bd4\u5982\u4f60\u53eb\u5c0f\u4eae\uff0c\u90a3\u4e48\uff1a
#define NAME \u5c0f\u4eae
\u4ee5\u540e\u4ee3\u7801\u4e2d\uff0c\u51e1\u662f\u51fa\u73b0\u2018NAME\u2019\u7684\u5730\u65b9\uff0c\u90fd\u4f1a\u88ab\u66ff\u6362\u6210 \u2018\u5c0f\u4eae\u2019\u3002
\u5728\u7f16\u8bd1\u4e0a\u770b\uff0c#define\u53ea\u662f\u544a\u8bc9\u7f16\u8bd1\u5668 \u2018\u4e00\u4e2a\u540d\u79f0\u66ff\u6362\u2019\uff0c \u7f16\u8bd1\u5668\u4e0d\u4f1a\u4e3a\u5176\u5206\u914d\u5185\u5b58\u7a7a\u95f4\uff0c\u5373\u4f7f\u4f60\u5b9a\u4e49\u4e86\u4e00\u4e2a#define\uff0c\u7136\u540e\u5728\u4ee3\u7801\u4e2d\u6ca1\u6709\u4f7f\u7528\uff0c\u7f16\u8bd1\u5668\u4e5f\u4e0d\u4f1a\u7ed9\u51fa\u4efb\u4f55\u8b66\u544a\u3002
\u76f8\u53cd\uff0cunsigned int\u662f\u4e00\u4e2a\u53d8\u91cf\u5b9a\u4e49\uff0c\u7f16\u8bd1\u5668\u4f1a\u4e3a\u5176\u5206\u914d\u5185\u5b58\uff0c\u5982\u679c\u4f60\u5b9a\u4e49\u4e86\u4e00\u4e2a\u53d8\u91cf\uff0c\u4f46\u7a0b\u5e8f\u4e2d\u6ca1\u6709\u4f7f\u7528\uff0c\u7f16\u8bd1\u5668\u4e5f\u4f1a\u4e3a\u5176\u5206\u914d\u5185\u5b58\uff0c\u540c\u65f6\u7ed9\u51fa\u8b66\u544a\u3002
\u5728\u5355\u7247\u673a\u4e2d\uff0c\u56e0\u4e3a\u5185\u5b58\u8d44\u6e90\u975e\u5e38\u6709\u9650\uff0c\u5982\u679c\u80fd\u7528#define\u5b9a\u4e49\u4e00\u4e9b\u7aef\u53e3\uff0c\u5730\u5740\u4e4b\u7c7b\u7684\u5e38\u91cf\uff0c\u4e00\u5b9a\u8981\u7528#define.
现在才明白UL是标记该宏长整型 十进制 数据，而不是字符，也不是int型数据。
C语言中默认宏中的数字是整型数据。
如下面的例子：
#define LENGTH (20UL*1024*1024)
你要输出他的话就要这样:
printf(“LENGTH is %ld\n”,LENGTH);
#define SECOND_PER_YEAR (60*60*24*365)UL
绛旓細缁忓父鍙戠幇涓浜汣璇█涓氳繃#define 瀹氫箟鐨勬暟鎹腑鍖呭惈鏈塙L绗﹀彿锛屼笉鐞嗚В涓轰粈涔堬紝鎶婁粬鍘绘帀鍙戠幇涔娌℃湁浠涔堝尯鍒傜幇鍦ㄦ墠鏄庣櫧UL鏄爣璁拌瀹闀挎暣鍨 鍗佽繘鍒 鏁版嵁锛岃屼笉鏄瓧绗︼紝涔熶笉鏄痠nt鍨嬫暟鎹侰璇█涓粯璁ゅ畯涓殑鏁板瓧鏄鏁村瀷鏁版嵁銆傚涓嬮潰鐨勪緥瀛愶細define LENGTH (20UL*1024*1024)浣犺杈撳嚭浠栫殑璇濆氨瑕佽繖鏍:printf(鈥...
绛旓細UINT鏄畯瀹氫箟 鍦╓indef.h涓彲浠ユ壘鍒 typedef unsigned int UINT;鍏朵粬濡侱WORD绛夌被鍚 typedef unsigned long DWORD;typedef int BOOL;typedef unsigned char BYTE;typedef unsigned short WORD;typedef float FLOAT;typedef FLOAT *PFLOAT;typedef BOOL near *PBOOL;typedef BOOL far ...
绛旓細DWORD double word 灏辨槸涓や釜瀛楅暱 鏈澶0xFFFFFFFF 杩欎釜瀹鏄井杞畾涔夌殑 涓昏鏄柟渚跨悊瑙ｅ彉閲忕殑绫诲瀷 DWORD 涓や釜瀛楅暱 HWND 绐楀彛鍙ユ焺绛夌瓑 瑕佸Windows缂栫▼ 灏卞繀椤昏鎱㈡參鐨勭悊瑙ｈ繖浜涘畯 鍏跺疄鏃犳墍璋撲粈涔堢悊瑙ｄ笉鐞嗚В鐨(闇瑕佸int绫诲瀷鐞嗚В鍚) 鎱㈡參鐨勫氨鐔熶簡 灏辩煡閬撲簡 ...
绛旓細define鏄瀹瀹氫箟锛屽氨鏄浛鎹㈢殑鎰忔濓紝浠栧畾涔夌殑鏄泦鍚堬紝鏄暣涓狪O鍙 typedef灏辨槸瀵规暟鎹被鍨嬬殑浠ｆ浛锛屽typedef unsigned int u32灏辨槸鐢╱32浠ｆ浛鏃犵鍙鍨鏁存暟锛屼娇鐢ㄦ椂灏辨槸u32 鍙橀噺锛屽氨鍙互浜嗐俿bit鏄壒娈婂姛鑳藉瘎瀛樺櫒鐨勪竴涓綅澹版槑锛屽锛宻bit led P2鈭0锛屽畾涔夌殑鏄叿浣撶殑浣嶅彉閲忋
绛旓細杩欏氨鏄竴涓噸鍛藉悕鐨勪綔鐢紝鍦ㄥ啓绋嬪簭鐨勬椂鍊欎綘浼氳鐢ㄥ埌unsigned int杩欎釜绫诲瀷鐨勫彉閲忥紝浣嗘槸鍥犱负澶暱鐢ㄨ捣鏉ヤ笉鏂逛究鑰屼笖澶氫簡寰堝鏄撹绋嬪簭鐪嬭捣鏉ヨ垂鍔诧紝浣犲彲浠ョ敤define璇彞鏉ョ粰杩欎釜绫诲瀷閲嶅懡鍚嶏紝閭ｄ笅娆¤鐢ㄥ埌杩欎釜绫诲瀷鏃跺氨鍙互浜唘nit鏉ヤ唬鏇縰nsigned int銆倁char鐨勯偅涓篃涓鏍 ...
绛旓細鍒ゆ柇涓涓彉閲忔槸鏈夌鍙锋暟杩樻槸鏃犵鍙锋暟锛岄棶棰樼殑鏈川鏄冨療鍙橀噺鐨勭被鍨嬶紝鑰屼笉鏄暟鏈韩銆傜浉淇″ぇ閮ㄥ垎绋嬪簭鍛樼煡閬撴湁绗﹀彿鏁板拰鏃犵鍙锋暟鐨勫尯鍒湪浜庢渶楂樹綅鐨勪綔鐢紝鎵浠ラ棶棰樼殑绐佺牬鍙涔熸槸鍦ㄦ渶楂樹綅鐨勫垽鏂笂銆備絾鏄彉閲忓瓨鍌ㄧ殑鍙槸涓涓01锛屾渶鍚庣殑瑙ｉ噴鍦ㄤ簬缂栬瘧鍣紝鎵浠ラ渶瑕佷緷闈犵紪璇戝櫒鏉ュ畬鎴愬垽鏂傚嵆灏嗘渶楂樹綅缃0鎴1锛屽彉閲忕殑鍊...
绛旓細鏃犵鍙锋暣鏁灏辨槸鎶婃渶楂樹綅鐨勭鍙蜂綅褰撲綔鏈夋晥鏁板瓧浜 浣犲彲浠ユ妸涓涓湁绗﹀彿鏁存暟褰撴棤绗﹀彿杈撳嚭锛涔鍙互鎶婁竴涓棤绗﹀彿鏁存暟褰撳仛鏈夌鍙疯緭鍑 浣犺瘯涓涓嬭繖涓細DWORD a=-666;DWORD b=3333333333;printf("a=%d\nb=%d\na=%u\nb=%u\n",a,b,a,b);浣犵湅鐪嬭ˉ鐮佺殑姒傚康锛屽氨涓嶄細鏈夎繖涓棶棰樹簡 ...
绛旓細鍙灏辨槸灏嗗亸绉婚噺杞寲涓烘棤绗鏁村瀷,鍏跺疄32浣嶆満鍣ㄧ殑鍦板潃灏辨槸鏃犵鍙鐨32浣鏁存暟銆備竴鑸儏鍐典笅,涓嶈繘琛宻ize_t绫诲瀷杞寲涔熸槸娌℃湁闂鐨(鍚庨潰鐨勫疄楠屽彲璇)銆傛垜璁や负,鍙湁鍋忕Щ閲忚冻澶熷ぇ,褰撳ぇ浜0x80000000鏃舵墠鏈夊奖鍝,鍥犱负杩欐椂鍊欑殑鍋忕Щ閲忔渶楂樹綅鏄1,鏈哄櫒榛樿涓烘槸璐熸暟浜嗐備技涔庝笂闈瀹瀹氫箟OFFSETOF涓洿鑳借鏄庤繖涓棶棰,鍥犱负杩欎釜瀹忓畾涔夋槸...
绛旓細灏界#define鍦–璇█涓彁渚涗究鎹凤紝浣嗛渶璋ㄦ厧浣跨敤銆傚浜庢暟鍊硷紝寤鸿浼樺厛浣跨敤const浠ュ己鍖栫被鍨嬫鏌ワ紝濡係EC_A_YEAR(60*60*24*365 UL)锛岄伩鍏嶆綔鍦ㄧ殑婧㈠嚭闂锛岀‘淇鏃犵鍙锋暣鏁鐨勬纭〃绀恒備簩銆佸瓧绗︿覆瀹鐨勭壒娈婅鍒 澶勭悊瀛楃涓插畯鏃讹紝鍔″繀娉ㄦ剰鍙嶆枩鏉犲拰寮曞彿鐨勬纭娇鐢紝濡係QR(x) = x * x 搴斿啓涓篠QR(x) = (x)...
绛旓細LCD_TypeDef缁撴瀯浣擄紝涓鍏4瀛楄妭锛2涓垚鍛橀兘鏄2瀛楄妭鐨勩傚畯瀹氫箟锛屽叾瀹炲氨鏄畾涔変竴涓 LCD_TypeDef缁撴瀯浣撳父閲忥紝鏈鍚庝竴鍙ユ槸寮哄埗绫诲瀷杞崲銆0x60000000 | 0x0001FFFE==0x6001FFFE锛屽叾瀹炵浉褰撲簬鍒嗗埆缁 LCD_TypeDef缁撴瀯浣撶殑LCD_REG璧嬪间负0x6001銆丩CD_RAM璧嬪间负0xFFFE ...
