澶у濂斤紝娆㈣繋鏉ュ埌鎴戠殑C璇█涓撴爮锛屾垜浼氬皢鑷繁瀛﹀埌鐨勭煡璇嗕互鑷繁鐨勭悊瑙ｅ垎浜粰澶у锛屽笇鏈涘ぇ瀹跺彲浠ュ拰鎴戜竴璧峰叡鍚岃繘姝ワ紝浠嶤璇█灏忕櫧涓€姝ヤ竴姝ユ垚涓哄ぇ浣?馃寛涓汉涓婚〉 馃摎C璇█涓撴爮 馃憖STM32涓撴爮

鏂囩珷鐩綍

• 鍓嶈█
• • 1銆?C璇█鏄粈涔堬紵
  • 2銆?C璇█鐨勫彂灞曞巻鍙?/font>
  • 3銆?VS椤圭洰銆佹簮鏂囦欢鍜屽ご鏂囦欢
  • 4銆?font color="pink">鎴戠殑绗竴涓狢璇█绋嬪簭
  • 5銆?font color="pink">main鍑芥暟
  • 6銆?font color="pink">printf鍑芥暟
  • 7銆?font color="pink">鍏抽敭瀛椾粙缁?/font>
  • 8銆?font color="pink">瀛楃鍜孉SCII缂栫爜
  • 9銆?font color="pink">瀛楃涓插拰\0
  • 10銆?font color="pink">杞箟瀛楃
  • 11銆?font color="pink">璇彞鍜岃鍙ュ垎绫?/font>
  • • 11.1 绌鸿鍙?/li>
    • 11.2 琛ㄨ揪寮忚鍙?/li>
    • 11.3 鍑芥暟璋冪敤璇彞
    • 11.4 澶嶅悎璇彞
    • 11.5 鎺у埗璇彞
  • 12. 浠€涔堟槸娉ㄩ噴锛熶负浠€涔堣鍐欐敞閲婏紵
  • • 12.1 娉ㄩ噴鐨勬柟娉?/li>
  • 13. VS灏忔妧宸?/font>
  • • 13.1 鏀瑰彉瀛椾綋澶у皬
    • 13.2娉ㄩ噴鍜屽彇娑堟敞閲?/li>
    • 13.3杩愯浠ｇ爜
    • 13.4璺冲埌琛岄鍜岃灏?/li>
  • 14. 缁撹

#include 

int main()
{
	printf("Hello world!\n");
	return 0;
}

5銆?font color="pink">main鍑芥暟

鍦ㄧ▼搴忛噷闈㈡垜浠彲浠ョ湅瑙佽繖鏍蜂竴鍙ヤ唬鐮? 杩欎釜涓滆タ鍙仛main鍑芥暟锛屾瘡涓狢璇█绋嬪簭涓笉绠℃湁澶氬皯琛屼唬鐮侊紝閮芥槸浠巑ain鍑芥暟寮€濮嬫墽琛岀殑锛宮ain鍑芥暟鏄▼搴忕殑鍏ュ彛锛宮ain鍑芥暟涔熷彨涓诲嚱鏁帮紝杩欓噷鐨刬nt 琛ㄧずmain鍑芥暟缁撴潫鍚庝細杩斿洖涓€涓暣鍨嬬被鍨嬬殑鍊硷紝鏁村瀷涔熷氨鏄暣鏁帮紝 main鍑芥暟鐨勫啓娉曚竴鑸儏鍐典笅鏄繖鏍风殑

int main()
{
	
	return 0;
}
//浠ュ墠鐨刴ain鍑芥暟鍐欐硶锛屽凡缁忚繃鏃朵簡锛屾墍浠ユ帹鑽愬ぇ瀹剁敤鐜板湪涓婇潰鎴戣繖绉嶇殑
//绗竴绉?/span>
void main()
{
	
	return 0;
}

//绗簩绉?/span>
void main(void)
{
	
	return 0;
}

//绗笁绉?/span>
int main(void)
{
	
	return 0;
}

鍦–璇█涓紝main鍑芥暟鏄潪甯搁噸瑕佺殑锛屽湪涓€涓狢绋嬪簭涓紝main鍑芥暟鏄暣涓▼搴忕殑鍏ュ彛锛岀▼搴忔槸浠巑ain鍑芥暟寮€濮嬫墽琛岀殑锛宮ain鍑芥暟鏈変笖鍙兘鏈変竴涓紝鍗充娇鍦ㄤ竴涓」鐩腑鏈夊緢澶氫釜.c鏂囦欢锛屼篃鍙兘鏈変竴涓猰ain鍑芥暟锛岃繖鍏跺疄涔熸槸寰堝ソ鐞嗚В鐨勶紝鍥犱负main鍑芥暟鏄▼搴忕殑鍏ュ彛锛岀▼搴忔渶寮€濮嬫墽琛岀殑鍦版柟锛岃鏄湁寰堝鐨刴ain鍑芥暟锛岄偅涔堣繖涓▼搴忓氨浼氫贡濂椾簡 main鍑芥暟灏卞厛缁欏ぇ瀹朵粙缁嶅埌杩欓噷浜嗭紝鍦ㄥ悗闈㈡垜浠啓鐨勬墍鏈夌▼搴忎腑锛岄兘鏄璺焟ain鍑芥暟鎵撴嫑鍛肩殑锛屽湪鍚庨潰鍐欎唬鐮佺殑鏃跺€欙紝鎴戜滑灏辫兘鎱㈡參鐨勬劅瑙夊埌瀹冨湪绋嬪簭涓殑閲嶈鎬т簡

鍐檓ain鍑芥暟闇€瑕佹敞鎰忕殑鍑犱釜鐐癸細

• main涓€瀹氫笉瑕佹嫾鍐欓敊锛屾湁鏃跺€欎細琚垜浠敊璇殑鎷煎啓鎴恗ian锛屽鑷寸▼搴忔姤閿欎笉鑳芥墽琛?/font>
• main鍚庨潰鐨勶紙锛変笉鑳芥紡鎺?/font>
• 浠ｇ爜涓笉鑳芥湁涓枃绗﹀彿锛屽鏋滀綘鐨勪唬鐮佸啓鐨勬纭紝浣嗘槸涓嶈兘鎵ц锛屽氨浠旂粏妫€鏌ヤ竴涓嬫槸涓嶆槸浠ｇ爜涓娇鐢ㄤ簡涓枃绗﹀彿
• 姣忔潯璇彞缁撴潫涔嬪悗瑕佸姞鍒嗗彿

printf("Hello world!\n");

printf("%d", 10);//鎵撳嵃鏁村瀷
printf("%c", 's');//鎵撳嵃瀛楃鍨?/span>
printf("%f", 3.14f);//鎵撳嵃娴偣鍨?/span>

#include <澶存枃浠剁殑鍚嶇О>

auto break case char const continue default do double else enum 
extern
float for goto if int long register return short signed sizeof
 static
struct switch typedef union unsigned void volatile while

8銆?font color="pink">瀛楃鍜孉SCII缂栫爜

鎴戜滑鍦ㄩ敭鐩樹笂闈㈠彲浠ユ暡鍑哄悇绉嶅悇鏍风殑瀛楃锛屽锛歛銆乫銆丂 锛侊骏 鈥︹€?*锛堬級鈥斺€旂瓑锛岃繖浜涚鍙烽兘琚О涓哄瓧绗︼紝鍦–璇█涓紝瀛楃鏄敤鈥?鈥樺紩璧锋潵鐨勶紝濡傗€檃鈥?鈥榖鈥?鈥?鈥?鎴戜滑鐭ラ亾锛屽湪璁＄畻鏈轰腑鎵€鏈夌殑鏁版嵁閮芥槸浠ヤ簩杩涘埗瀛樺偍璧锋潵鐨勶紝閭ｄ箞杩欎簺瀛楃鍦ㄥ唴瀛樹腑鍒嗗埆鏄互鎬庢牱鐨勪簩杩涘埗瀛樺偍鐨勫憿锛屾垜浠彲浠ョ粰姣忎釜瀛楃缂栦竴涓簩杩涘埗鐨勫簭鍒楋紝杩欏氨鍙仛缂栫爜锛屼负浜嗘柟渚挎垜浠€氫俊锛屼笉閫犳垚娣蜂贡锛岀編鍥藉浗瀹舵爣鍑嗗崗浼氾紙ANSI锛夊嚭鍙颁簡涓€涓爣鍑咥SCII缂栫爜锛孋璇█涓墍鏈夌殑瀛楃閮介伒寰簡ASCII鐨勭紪鐮佹柟寮?/p>

ASCII缂栫爜琛? 鐪嬭捣鏉ユ槸涓嶆槸鎸哄鐨勶紝鍏跺疄鍦ㄥ涔燙璇█鐨勮繃绋嬩腑杩欎簺閮戒笉闇€瑕佹垜浠幓璁帮紝闇€瑕佺敤鍒扮殑鏃跺€欐煡灏辫浜?/p>

浣嗘槸鏈夊嚑缁勭壒娈婄殑鎴戜滑杩樻槸闇€瑕佸幓璁颁竴涓嬬殑

• 瀛楃A ~ Z瀵瑰簲鐨凙SCII鐮佸€间负65 ~ 90
• 瀛楃a ~ z瀵瑰簲鐨凙SCII鐮佸€间负97 ~ 122
• 瀵瑰簲澶у皬鍐欑殑瀛楁瘝瀵瑰簲鐨凙SCII鐨勫樊鍊兼槸32
• \n瀵瑰簲鐨凙SCII鐮佸€兼槸 10
• 0 ~ 31鐨勮繖32涓狝SCII鐮佸瓧绗︿负涓嶅彲鎵撳嵃瀛楃锛屾槸鏃犳硶鎵撳嵃鍦ㄥ睆骞曚笂瑙傚療鐨?鎵撳嵃鍗曚釜瀛楃鍙互鐢?c鏉ユ寚瀹氭牸寮忥紝濡傦細

#include 

int main()
{
	printf("%c\n", 'a');
	printf("%c\n", 97); //杩欓噷97瀵瑰簲鐨凙SCII鐮佸€兼槸瀛楃a锛屽湪杩欓噷涔熸槸鍙互鎵撳嵃鐨?/span>
	return 0;
}

鎴戠幇鍦ㄥ啓涓€涓唬鐮侊紝鎶?2-127瀵瑰簲鐨凙SCII鐮佸€兼墦鍗板湪灞忓箷涓婏紝浠ｇ爜澶у涓嶉渶瑕佺悊瑙ｏ紝杩欓噷鍙槸鐢ㄤ簬缁欏ぇ瀹跺睍绀? 鎴戜滑鍙互鐪嬪埌椤哄埄鐨勫湪灞忓箷涓婃墦鍗板嚭鏉ヤ簡32-127鎵€瀵瑰簲鐨凙SCII鐮佸€硷紝涓轰簡缁欏ぇ瀹剁洿瑙備竴鐐癸紝鎴戝浠ｇ爜绋嶄綔淇敼 璁插埌杩欓噷鎯冲繀澶у瀵笰SCII缂栫爜宸茬粡鐞嗚В鐨勫樊涓嶅浜?/p>

9銆?font color="pink">瀛楃涓插拰\0

濡備綍鍦–璇█涓〃绀哄瓧绗︿覆鍛紵浣跨敤鍙屽紩鍙锋嫭璧锋潵鐨勪竴娈靛唴瀹瑰氨鏄瓧绗︿覆锛屽鈥渉ello world鈥濆氨鏄竴涓瓧绗︿覆锛屽瓧绗︿覆涔熷彲浠ョ敤%s鐨勬牸寮忔潵鎵撳嵃

printf("hello world");
printf("%s", "hello world");

鍦–璇█涓殑瀛楃涓蹭腑闅愯棌鐨勪竴涓壒娈婄殑缁撴潫鏍囪瘑绗0锛屼絾鏄畠鎵撳嵃鍑烘潵鏄笉鏄剧ず鐨勶紝濡傚浘 閭ｄ箞鏈変粈涔堝姙娉曞彲浠ョ湅鍒板畠鍛紵 鎴戜滑鍙互鐢╒S鐨勭洃瑙嗗姛鑳斤紝棣栧厛鎸変綇F10杩涘叆璋冭瘯锛屼緷娆＄偣鍑诲鍥? 娣诲姞濂戒箣鍚庡啀鎸変竴娆10锛岃浠ｇ爜鎵ц鍒颁笅涓€鍙?杩欐椂鍊欐垜浠睍寮€鐩戣鐨勯」灏卞彲浠ョ湅鍒癨0 杩欏氨杩涗竴姝ラ獙璇佷簡瀛楃涓茬殑缁撳熬鏈変竴涓仠姝㈢殑鏍囪瘑绗?杩欎釜鍋滄琛ㄧず绗︽槸寰堥噸瑕佺殑锛屾垜鐜板湪缁欏ぇ瀹跺啓涓€涓瓧绗︽暟缁勶紝鍒濆鍖栫殑鏃跺€欎笉鍔燶0,鎴戜滑鍙互鐪嬬湅鎵撳嵃鍑烘潵鐨勬槸浠€涔? 鎴戜滑鍙互鐪嬪埌锛屽鏋滄病鏈塡0鐨勮瘽printf鍑芥暟娌℃湁璇诲埌\0锛屼笉浼氬仠姝紝灏辩户缁墦鍗颁笅鍘讳簡锛岀洿鍒伴亣鍒颁笅涓€涓猏0锛岀幇鍦ㄦ垜浠姞涓奬0鍐嶆潵鐪嬬湅 鍙互鐪嬪埌锛屽姞涓奬0涔嬪悗灏变笉浼氬嚭鐜版墦鍗颁贡鐮佺殑鎯呭喌浜嗭紝鑷充簬涓轰粈涔堬紝涓嶆槸鎴戜滑杩欑瘒鏂囩珷瑕佽瑙ｇ殑閲嶇偣锛屽ぇ瀹跺彧闇€瑕佺煡閬揬0鐨勯噸瑕佹€у氨鍙互浜嗭紝鍏跺畠鐨勬垜灏变笉鍐嶈繃澶氳禈杩颁簡

10銆?font color="pink">杞箟瀛楃

鍒颁簡杩欓噷锛屾垜鏉ョ粰澶у璁茶В鏈夊叧杞箟瀛楃鐨勭煡璇嗙偣锛屼篃璁稿湪鍓嶉潰鐨勪唬鐮佷腑锛屼綘寰堝ソ濂嘰n 銆乗0鍒板簳鏄粈涔堬紝鍏跺疄鍦ㄥ瓧绗︿腑鏈変竴缁勭壒娈婄殑瀛楃鍙浆涔夊瓧绗︼紝椤惧悕鎬濅箟灏辨槸杞彉鍘熸潵鐨勬剰鎬濈殑瀛楃锛屾瘮濡傛垜浠墦鍗板瓧绗︿覆abcnad锛?缁撴灉濡傚浘

閭ｅ鏋滄垜浠湪n鐨勫墠闈㈠啀鍔犱笂\鐨勮瘽浼氭€庝箞鏍峰憿锛熸垜鍔犱笂鍘荤湅涓€涓嬶紝杩愯缁撴灉濡傚浘 鍙互鐪嬪埌n娑堝け涓嶈浜嗭紝鑰宎d璺戝埌浜嗕笅涓€琛岋紝鍏跺疄\n鏄竴涓浆涔夊瓧绗︼紝琛ㄧず鎹㈣锛屾垜浠彲浠ョ畝鍗曠殑鐞嗚В涓猴紝鏄痋璁﹏鐨勬剰鎬濆彂鐢熶簡杞彉锛宯鏈潵鏄竴涓櫘閫氱殑瀛楃锛岃\杞箟涓轰簡鎹㈣鐨勬剰鎬濓紝C璇█涓儚杩欐牱鐨勮浆涔夊瓧绗﹁繕鏈夊緢澶氾紝濡傦細 鍏蜂綋鐨勫彲鍙傝€冭繖涓摼鎺ワ細https://zh.cppreference.com/w/c/language/escape

11銆?font color="pink">璇彞鍜岃鍙ュ垎绫?/font>

C璇█鐨勪唬鐮佹槸鐢变竴鏉′竴鏉¤鍙ユ瀯鎴愮殑锛屽ぇ浣撳彲鍒嗕负涓€涓嬩簲绫伙細

• 绌鸿鍙?/li>
• 琛ㄨ揪寮忚鍙?/li>
• 鍑芥暟璋冪敤璇彞
• 澶嶅悎璇彞
• 鎺у埗璇彞 鎺ヤ笅鏉ユ垜缁欏ぇ瀹朵竴涓€浠嬬粛

11.1 绌鸿鍙?/h4>

绌鸿鍙ユ槸鏈€绠€鍗曠殑锛屼竴涓垎鍙峰氨鏄竴鏉¤鍙ワ紝鏄┖璇彞

#include 
int main()
{
 ;//绌鸿鍙?/span>
 return 0;
}

绌鸿鍙ヤ竴鑸嚭鐜扮殑鍦版柟鏄紝杩欓噷闇€瑕佷竴鏉¤鍙ワ紝浣嗘槸杩欎釜璇彞涓嶅仛浠讳綍浜嬫儏锛屽氨鍙互鍐欎竴涓┖璇彞

11.2 琛ㄨ揪寮忚鍙?/h4>

琛ㄨ揪寮忓氨鏄啀琛ㄨ揪寮忕殑鍚庨潰鍔犱笂鍒嗗彿锛屽涓?/p>

#include 
int main()
{
 int a = 20;
 int b = 0;
 b = a + 5; //琛ㄨ揪寮忚鍙?/span>
 return 0;
}

11.3 鍑芥暟璋冪敤璇彞

鍑芥暟璋冪敤鐨勬椂鍊欎篃浼氬姞涓婂垎鍙凤紝灏辨槸鍑芥暟璋冪敤璇彞

#include 
int Add(int x, int y)
{
 return x+y;
}
int main()
{
 printf("hehe\n");//鍑芥暟璋冣饯璇彞
 int ret = Add(2, 3);//鍑芥暟璋冣饯璇彞 
 return 0;
}

11.4 澶嶅悎璇彞

#include 
void print(int arr[], int sz) //鍑芥暟鐨勨激鎷彿涓殑浠ｇ爜涔熸瀯鎴愬鍚堣鍙?/span>
{
 int i = 0;
 for(i=0; i<sz; i++)
 {
 printf("%d ", arr[i]);
 }
}
int main()
{
 int i = 0;
 int arr[10] = {0};
 for(i=0; i<10; i++) //for寰幆鐨勫惊鐜綋鐨勨激鎷彿涓殑灏辨槸澶嶅悎璇彞
 {
 arr[i] = 10-i;
 printf("%d\n", arr[i]);
 }
 return 0;
}

11.5 鎺у埗璇彞

鎺у埗璇彞鐢ㄤ簬鎺у埗绋嬪簭鐨勬墽琛屾祦绋嬶紝浠ュ疄鐜扮▼搴忕殑鍚勭缁撴灉鏂瑰紡锛孋璇█鏀寔涓夌缁撴瀯锛屽垎鍒槸椤哄簭缁撴瀯銆侀€夋嫨缁撴瀯銆佸惊鐜粨鏋勫悗闈㈢殑鏂囩珷浼氫粩缁嗙殑涓哄ぇ瀹惰瑙?/p>

12. 浠€涔堟槸娉ㄩ噴锛熶负浠€涔堣鍐欐敞閲婏紵

• 娉ㄩ噴鏄浠ｇ爜鐨勮鏄庯紝缂栬瘧鍣ㄤ細蹇界暐娉ㄩ噴锛屼篃灏辨槸璇达紝娉ㄩ噴瀵瑰疄闄呬唬鐮佹病鏈夊奖鍝嶃€?/li>
• 娉ㄩ噴鏄粰绋嬪簭鍛樿嚜宸憋紝鎴栬€呭叾浠栫▼搴忓憳鐪嬬殑
• 濂界殑娉ㄩ噴鍙互甯垜浠洿濂界殑鐞嗚В浠ｇ爜锛屼絾鏄篃涓嶈杩囧害娉ㄩ噴锛屼笉瑕佸啓娌″繀瑕佺殑娉ㄩ噴銆?褰撶劧涓嶅啓娉ㄩ噴鍙兘浼氳鍚庢湡闃呰浠ｇ爜鐨勨紙鎶撶媯
• 鍐欐敞閲娾紑瀹氱▼搴︿笂鍙嶅簲浜嗙▼搴忎綔鑰呯殑绱犺川锛屽缓璁激瀹跺啓蹇呰鐨勬敞閲婏紝鍦ㄦ湭鏉ユ壘饧綔鐨勬椂鍊欙紝鍐欎唬鐮佹椂 鐣欎笅蹇呰鐨勬敞閲婁篃浼氱粰饩瘯瀹樼暀涓嬫洿濂界殑鍗拌薄

12.1 娉ㄩ噴鐨勬柟娉?/h4>

娉ㄩ噴鏈変袱绉嶆敞閲婄殑鏂规硶

• 绗竴绉? * 瑕佹敞閲婄殑璇彞 * /锛屽鍥? 娉ㄩ噴鐨勮鍙ヤ笉浼氳鎵ц锛岃€屾槸浼氳鏇挎崲鎴愮┖鏍?/p>

• 绗簩绉?/瑕佹敞閲婄殑璇彞锛屽鍥? 杩欎袱绉嶆敞閲婄殑鍖哄埆鏄紝绗竴绉嶅彲浠ュ琛屾敞閲婏紝绗簩绉嶅彧鑳藉崟琛屾敞閲?/p>

13. VS灏忔妧宸?/font>