c程序main函数参数

Ⅰ main鍑芥暟鐨勫弬鏁

C绋嬪簭鏈澶х殑鐗圭偣灏辨槸鎵鏈夌殑绋嬪簭閮芥槸鐢ㄥ嚱鏁版潵瑁呴厤鐨勩俶ain()绉颁箣涓轰富鍑芥暟锛屾槸鎵鏈夌▼
搴忚繍琛岀殑鍏ュ彛銆傚叾浣欏嚱鏁板垎涓烘湁鍙傛垨鏃犲弬涓ょ嶏紝鍧囩敱main()鍑芥暟鎴栧叾瀹冧竴鑸鍑芥暟璋冪敤锛岃嫢璋冪敤
鐨勬槸鏈夊弬鍑芥暟锛屽垯鍙傛暟鍦ㄨ皟鐢ㄦ椂浼犻掋 intmain(void)//鏁存暟绫诲瀷涓诲嚱鏁(鏃犵被鍨){...y1=f1(x1,x2);//璧嬪艰繃绋...}f1(inta,intb)//f1(鏁存暟绫诲瀷a,鏁存暟绫诲瀷b){//鐧惧害鐧剧戠ず渚嬩唬鐮.....Y2=f2(x3,x4);//璧嬪艰繃绋//鐧惧害鐧剧戠ず渚嬩唬鐮亇f2(intm,intn)//f2(鏁存暟绫诲瀷m,鏁存暟绫诲瀷n){//鐧惧害鐧剧戠ず渚嬩唬鐮亇鍦ㄥ墠闈㈣剧▼鐨勫︿範涓锛屽筸ain()鍑芥暟濮嬬粓浣滀负涓昏皟鍑芥暟澶勭悊锛屼篃灏辨槸璇达紝鍏佽竚ain锛堬級璋冪敤
鍏跺畠鍑芥暟骞朵紶閫掑弬鏁般備簨瀹炰笂锛宮ain()鍑芥暟鏃㈠彲浠ユ槸鏃犲弬鍑芥暟锛屼篃鍙浠ユ槸鏈夊弬鐨勫嚱鏁般傚逛簬鏈
鍙傜殑褰㈠紡鏉ヨ达紝灏遍渶瑕佸悜鍏朵紶閫掑弬鏁般
鎴戜滑鍏堢湅涓涓媘ain()鍑芥暟鐨勫甫鍙傜殑褰㈠紡锛 int銆main(intargc,char**argv)//鏁存暟绫诲瀷涓诲嚱鏁(鏁存暟绫诲瀷缁熻″弬鏁颁釜鏁,瀛楃︾被鍨*鏁扮粍鎸囬拡鑷冲瓧绗[]){//鐧惧害鐧剧戠ず渚嬩唬鐮......}浠庡嚱鏁板弬鏁扮殑褰㈠紡涓婄湅锛屽寘鍚涓涓鏁村瀷鍜屼竴涓鎸囬拡鏁扮粍銆傚綋涓涓狢鐨勬簮绋嬪簭缁忚繃缂栬瘧銆侀摼鎺ュ悗锛屼細鐢熸垚鎵╁睍鍚嶄负.EXE鐨勫彲鎵ц屾枃浠讹紙瀵箇indows鎿嶄綔绯荤粺鑰岃█锛夛紝杩欐槸鍙浠ュ湪鎿嶄綔绯荤粺涓嬬洿鎺ヨ繍琛岀殑鏂囦欢锛屾崲鍙ヨ瘽璇达紝灏辨槸鐢辩郴缁熸潵鍚鍔ㄨ繍琛岀殑銆傚筸ain()鍑芥暟鏃㈢劧涓嶈兘鐢卞叾瀹冨嚱鏁拌皟鐢ㄥ拰浼犻掑弬鏁帮紝灏卞彧鑳界敱
绯荤粺鍦ㄥ惎鍔ㄨ繍琛屾椂浼犻掑弬鏁颁簡銆
鍦ㄦ搷浣滅郴缁熺幆澧冧笅锛屼竴鏉″畬鏁寸殑杩愯屽懡浠ゅ簲鍖呮嫭涓ら儴鍒嗭細鍛戒护涓庣浉搴旂殑鍙傛暟銆傚叾鏍煎紡涓猴細
鍛戒护鍙傛暟1鍙傛暟2....鍙傛暟nt;
姝ゆ牸寮忎篃绉颁负鍛戒护琛屻傚懡浠よ屼腑鐨勫懡浠ゅ氨鏄鍙鎵ц屾枃浠剁殑鏂囦欢鍚嶏紝鍏跺悗鎵璺熷弬鏁伴渶鐢ㄧ┖鏍煎垎闅旓紝骞朵负瀵瑰懡浠ょ殑杩涗竴姝ヨˉ鍏咃紝涔熷嵆鏄浼犻掔粰main()鍑芥暟鐨勫弬鏁般
鍛戒护琛屼笌main()鍑芥暟鐨勫弬鏁板瓨鍦ㄥ備笅鐨勫叧绯伙細
璁惧懡浠よ屼负锛歱rogram str1 str2 str3 str4 str5
鍏朵腑program涓烘枃浠跺悕锛屼篃灏辨槸涓涓鐢眕rogram.c缁忕紪璇戙侀摼鎺ュ悗鐢熸垚鐨勫彲鎵ц屾枃浠秔rogram.exe锛屽叾鍚庡悇璺5涓鍙傛暟銆傚筸ain()鍑芥暟鏉ヨ达紝瀹冪殑鍙傛暟argc璁板綍浜嗗懡浠よ屼腑鍛戒护涓庡弬鏁扮殑涓鏁帮紝鍏6涓锛屾寚閽堟暟缁勭殑澶у皬鐢卞弬鏁癮rgc鐨勫煎喅瀹氾紝鍗充负char*argv[6]锛屾寚閽堟暟缁勭殑鍙栧兼儏鍐靛傚浘6-15鎵绀恒

鏁扮粍鐨勫悇鎸囬拡鍒嗗埆鎸囧悜涓涓瀛楃︿覆銆傚簲褰撳紩璧锋敞鎰忕殑鏄鎺ユ敹鍒扮殑鎸囬拡鏁扮粍鐨勫悇鎸囬拡鏄浠庡懡浠よ岀殑寮濮嬫帴鏀剁殑锛岄栧厛鎺ユ敹鍒扮殑鏄鍛戒护锛屽叾鍚
鎵嶆槸鍙傛暟銆
涓嬮潰鐢ㄥ疄渚嬫潵璇存槑甯﹀弬鏁扮殑main()鍑芥暟鐨勬ｇ‘浣跨敤銆
[渚6-29] 鍒╃敤鍥惧舰搴撳嚱鏁扮粯鍒朵竴涓鍙樺寲鐨勭幆銆傚畠鏄鎶婁竴涓鍗婂緞涓篟 1鐨勫渾鍛ㄥ垎鎴恘浠斤紝鐒
鍚庝互姣忎釜绛夊垎鐐逛负鍦嗗績锛屼互R s涓哄崐寰勭敾n涓鍦嗭紙鍏充簬浣滃浘鐨勮︾粏鐞嗚烘湰鏁欐潗绗9绔犵1鑺備綔浜嗕笓
闂ㄤ粙缁嶏紝杩欓噷鍙浣滅畝鍗曞垎鏋愶級銆傚埄鐢╩ a i n ( 锛夊嚱鏁扮殑甯﹀弬鏁板舰寮忥紝鎴戜滑鍙浠ヤ粠閿鐩樹互鍛戒护琛岀殑鏂
寮忚緭鍏R 1鍜孯 s鍙婂睆骞曠殑鑳屾櫙鑹层 #include<graphics.h>//鍖呭惈鍥惧舰搴撳嚱鏁扮殑澶存枃浠#include<math.h>#definepi3.1415926intmain(intargc锛宑har**argv){intx,y,r1,rs,color;doublea;intgdriver=DETECT,gmode;initgraph(&gdriver,&gmode,"..\bgi")//鍚鍔ㄥ浘褰㈠伐浣滄柟寮弐1=atoi(argv[1]);//璁＄畻鍩虹鍦嗗崐寰剅s=atoi(argv[2]);//璁＄畻鍚屽績鍦嗗崐寰刢olor=atoi(argv[3]);//鑳屾櫙鑹瞔leardevice();//娓呴櫎鍥惧舰灞忓箷setbkcolor(color);//璁剧疆鑳屾櫙鑹瞫etcolor鈶凤紱//璁剧疆鍥惧舰鏄剧ず棰滆壊for(a=0;a<=2*pi;a+=pi/18)//缁樺埗鍚屽績鍦唟x=r1*cos(a)+320;y=r1*sin(a)+240;circle(x,y,rs);//浠ュ渾蹇冨潗鏍囦负x銆亂锛屽崐寰勪负rs鐢诲渾}getch();//绛夊緟鎸夐敭缁х画closegraph();//鍏抽棴鍥惧舰宸ヤ綔鏂瑰紡return0;}鑻ョ▼搴忓悕涓篖6-29.c锛岀粡缂栬瘧銆佽繛缁撶敓鎴愬彲鎵ц屾枃浠禠6-29.exe銆傚湪鎿嶄綔绯荤粺鐨勭幆澧冧笅杩愯岀▼搴忥紝鍛戒护琛屾柟寮忎负锛
鍏蜂綋姝ラわ細
1銆乄in + R鎵撳紑杩愯岋紱
2銆佽緭鍏cmd鎵撳紑鍛戒护琛岋紱
3銆佽繘鍏ュ埌瑕佹墽琛岀殑exe鏂囦欢鎵鍦ㄧ洰褰曪紝濡傝佽佹墽琛孍:绋嬪簭璁捐Ctest.exe鏂囦欢锛屽垯杈撳叆E:鍥炶溅锛堟敞鎰忥細濡傛灉瑕佹洿鏀瑰叾浠栫洏鐩褰曞繀椤婚栧厛杩涘叆瑕佽繘鍏ョ洏鐨勬牴鐩褰曪紝渚嬪傝繘鍏E鐩樺垯杈撳叆E:涓嶇敤杈撳叆cd E:锛夎繘鍏E鐩樻牴鐩褰曪紝鍐嶈緭鍏cd E:绋嬪簭璁捐 鍒欒繘鍏ヤ簡褰撳墠鐩褰曪紝鏈鍚庡氨鍙浠ヨ緭鍏ュ弬鏁颁簡锛屼緥濡侰test yishi weban鍥炶溅鍗冲彲锛圕test涓鸿佹墽琛岀殑鍙鎵ц屾枃浠讹紝鍚庨潰涓や釜涔熶负瑕佷紶閫掔粰main鍑芥暟鐨勫弬鏁帮級锛
l6-29 40 20 3
鍒欏懡浠よ屼笌main锛堬級鍑芥暟鐨勫弬鏁版湁濡傚浘6-16鎵绀虹殑鍏崇郴
鍥6-16涓锛宎rgv[0]鏄绋嬪簭鍚嶏紝argv[1]鏄痳1鐨勫硷紝
argv[2]鏄痳s鐨勫硷紝argv[3]鏄灞忓箷鐨勮儗鏅鑹层
鐢变簬鎸囬拡鏁扮粍鍧囧瓨鏀惧瓧绗︿覆锛屾墍闇鐨勫渾鍗婂緞鍙婅儗鏅
鑹插僵閫氳繃atoi锛堬級鍑芥暟杞鎹涓烘暣鍨嬨
閫氳繃甯﹀弬鏁扮殑main锛堬級鍑芥暟锛屾垜浠鍙浠ヤ负鑷宸辩殑绋嬪簭璁剧疆鍙ｄ护锛屽湪杩愯岀▼搴忕殑鍛戒护琛屼腑缁欏嚭鎵闇鐨勫彛浠わ紝姝ｇ‘鍒欑户缁锛屽惁鍒欓鍑恒傜▼搴忓浘褰㈣緭鍑哄傚浘6-17鎵绀恒

[渚6-30]灏嗕笂杩扮▼搴忎綔淇鏀癸紝鍦ㄧ▼搴忕殑鍏ュ彛澶勬坊缃瀵嗙爜锛岃嫢缁欏畾瀵嗙爜姝ｇ‘锛屽垯鏄剧ず鍥
褰銆 #include<graphics.h>#include<math.h>#definepi3.1415926intmain(intargc,char**argv){intx,y,r1,rs,color;doublea;intgdriver=DETECT,gmode;if(strcmp(argv[1],"pass")!=0)//璁剧疆鍙ｄ护鐨勬瘮杈儃printf("passworderror! ");exit(0);}initgraph(&gdriver,&gmode,"..\bgi");r1=atoi(argv[2]);rs=atoi(argv[3]);color=atoi(argv[4]);cleardevice();setbkcolor(color);setcolor鈶凤紱for(a=0;a<=2*pi;a+=pi/18){x=r1*cos(a)+320;y=r1*sin(a)+240;circle(x,y,rs);}getch();closegraph();return0;}鍦ㄦ搷浣滅郴缁熺殑鐜澧冧笅杩愯岀▼搴忥紝 鍛戒护琛屼腑澧炲姞鍙ｄ护鈥減ass鈥濓紝鍛戒护琛屾柟寮忎负锛
l6-30 pass 20 40 3
鎸囬拡鏁扮粍鐨勫瓨鍌ㄥ瓧绗︿覆濡傚浘6-18鎵绀恒

鑻ョ粰瀹氬瓧绗︿覆argv[1]鐨勫兼槸pass锛屽垯绋嬪簭姝ｇ‘杩愯岋紝鍚﹀垯绋嬪簭閫鍑恒傚彛浠ゆｇ‘鐨勬儏鍐典笅锛屾樉绀虹殑鍥惧舰涓哄浘6-17涓鐨勪竴涓銆

Ⅱ C璇瑷涓鐨刴ain锛堬級鍑芥暟

涓銆佸畾涔

main鍑芥暟,鍙堢О涓诲嚱鏁,鏄绋嬪簭鎵ц岀殑璧风偣锛宮ain鏄鐩稿规潵璇寸殑,濡傚悓闊冲︾悊璁轰箣涓昏皟浜庢硾闊,娉涢煶鍗崇▼搴忎腑鐨勯櫎main涔嬪栫殑鍏朵粬鍑芥暟锛岃繋鍚堜汉浠鐨勬濊冩柟寮忚岀敓鎴愮殑鑰岄潪蹇呭畾鐨勬ā寮.鏈変富鏈夋★紝鎵ц岃捣鏉ユ潯娓呯紩鏋愶紝鏃㈠彲灏嗙▼搴忔ā鍧楀寲鍙堝疄鐜颁簡涓涓闂鍚堢殑鏁翠綋銆

浜屻乵ain()鍑芥暟鐨勫舰寮

鍦ㄦ渶鏂扮殑 C99 鏍囧噯涓锛屽彧鏈変互涓嬩袱绉嶅畾涔夋柟寮忔槸姝ｇ‘鐨勶細

int main(void) /*鏃犲弬鏁板舰寮*/
{
...
return 0;
}
int main(int argc, char *argv[]) /*甯﹀弬鏁板舰寮*/
{
...
return 0;
}
int鎸囨槑浜唌ain()鍑芥暟鐨勮繑鍥炵被鍨锛屽嚱鏁板悕鍚庨潰鐨勫渾鎷鍙蜂竴鑸鍖呭惈浼犻掔粰鍑芥暟鐨勪俊鎭銆倂oid琛ㄧず娌℃湁缁欏嚱鏁颁紶閫掑弬鏁般

涓夈乵ain()鍑芥暟鐨勮繑鍥炲

浠庡墠闈㈡垜浠鐭ラ亾main()鍑芥暟鐨勮繑鍥炲肩被鍨嬫槸int鍨嬬殑锛岃岀▼搴忔渶鍚庣殑 return 0; 姝ｄ笌涔嬮仴鐩稿懠搴旓紝0灏辨槸main()鍑芥暟鐨勮繑鍥炲笺傞偅涔堣繖涓0杩斿洖鍒伴偅閲屽憿锛熻繑鍥炵粰鎿嶄綔绯荤粺锛岃〃绀虹▼搴忔ｅ父閫鍑恒

鍥犱负return璇鍙ラ氬父鍐欏湪绋嬪簭鐨勬渶鍚庯紝涓嶇¤繑鍥炰粈涔堝硷紝鍙瑕佸埌杈捐繖涓姝ワ紝璇存槑绋嬪簭宸茬粡杩愯屽畬姣曘傝宺eturn鐨勪綔鐢ㄤ笉浠呭湪浜庤繑鍥炰竴涓鍊硷紝杩樺湪浜庣粨鏉熷嚱鏁般

鍥涖乵ain()鍑芥暟鐨勫弬鏁

C缂栬瘧鍣ㄥ厑璁竚ain()鍑芥暟娌℃湁鍙傛暟锛屾垨鑰呮湁涓や釜鍙傛暟锛堟湁浜涘疄鐜板厑璁告洿澶氱殑鍙傛暟锛屼絾杩欏彧鏄瀵规爣鍑嗙殑鎵╁睍锛夈傝繖涓や釜鍙傛暟锛屼竴涓鏄痠nt绫诲瀷锛屼竴涓鏄瀛楃︿覆绫诲瀷銆

绗涓涓鍙傛暟鏄鍛戒护琛屼腑鐨勫瓧绗︿覆鏁般傛寜鐓ф儻渚嬶紙浣嗕笉鏄蹇呴』鐨勶級锛岃繖涓猧nt鍙傛暟琚绉颁负argc锛坅rgument count锛夈傜浜屼釜鍙傛暟鏄涓涓鎸囧悜瀛楃︿覆鐨勬寚閽堟暟缁勩傚懡浠よ屼腑鐨勬瘡涓瀛楃︿覆琚瀛樺偍鍒板唴瀛樹腑锛屽苟涓斿垎閰嶄竴涓鎸囬拡鎸囧悜瀹冦

鎸夌収鎯渚嬶紝杩欎釜鎸囬拡鏁扮粍琚绉颁负argv锛坅rgument value锛夈傜郴缁熶娇鐢ㄧ┖鏍兼妸鍚勪釜瀛楃︿覆鏍煎紑銆備竴鑸鎯呭喌涓嬶紝鎶婄▼搴忔湰韬鐨勫悕瀛楄祴鍊肩粰argv[0]锛屾帴鐫锛屾妸鏈鍚庣殑绗涓涓瀛楃︿覆璧嬬粰argv[1]锛岀瓑绛夈

鎵╁睍璧勬枡

C++涓鐨刴ain鍑芥暟鐨勫簲鐢锛

C++缁ф壙浜咰璇瑷鐨勫ぇ閮ㄥ垎鐗规э紝鍥犳や繚鐣欎簡鈥滅▼搴忔绘槸浠巑ain鍑芥暟寮濮嬫墽琛岋紝涓旀绘槸榛樿や粠main鍑芥暟鐨剅eturn璇鍙ユ垨缁撳熬澶勭粨鏉熻繍琛屸濊繖涓浼犵粺锛屼絾鏄瑕佹敞鎰忥紝C++涓鐨刴ain鍑芥暟瑕佹兂浣滀负绋嬪簭鎵ц岀殑鍑哄叆鍙ｏ紝蹇呴』鍐欏湪鍏ㄥ眬(Global)鑼冨洿锛屼笉鑳藉啓鎴愭煇涓缁撴瀯浣撴垨鏌愪釜绫荤殑鎴愬憳銆

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