锘??xml version="1.0" encoding="utf-8" standalone="yes"?> 鍏堝0鏄庡嚑涓寚閽堟斁鐫鍋氫緥瀛愶細 渚嬩竴錛? (1)int*ptr; (2)char*ptr; (3)int**ptr; (4)int(*ptr)[3]; (5)int*(*ptr)[4]; 鎸囬拡鐨勭被鍨? 浠庤娉曠殑瑙掑害鐪嬶紝浣犲彧瑕佹妸鎸囬拡澹版槑璇彞閲岀殑鎸囬拡鍚嶅瓧鍘繪帀錛屽墿涓嬬殑閮ㄥ垎灝辨槸榪欎釜鎸囬拡鐨勭被鍨嬨傝繖鏄寚閽堟湰韜墍鍏鋒湁鐨勭被鍨嬨傝鎴戜滑鐪嬬湅渚嬩竴涓悇涓寚閽堢殑綾誨瀷錛? (1)int*ptr;//鎸囬拡鐨勭被鍨嬫槸int* (2)char*ptr;//鎸囬拡鐨勭被鍨嬫槸char* (3)int**ptr;//鎸囬拡鐨勭被鍨嬫槸int** (4)int(*ptr)[3];//鎸囬拡鐨勭被鍨嬫槸int(*)[3] (5)int*(*ptr)[4];//鎸囬拡鐨勭被鍨嬫槸int*(*)[4] 鎬庝箞鏍鳳紵鎵懼嚭鎸囬拡鐨勭被鍨嬬殑鏂規(guī)硶鏄笉鏄緢綆鍗曪紵 鎸囬拡鎵鎸囧悜鐨勭被鍨? 褰撲綘閫氳繃鎸囬拡鏉ヨ闂寚閽堟墍鎸囧悜鐨勫唴瀛樺尯鏃訛紝鎸囬拡鎵鎸囧悜鐨勭被鍨嬪喅瀹氫簡緙栬瘧鍣ㄥ皢鎶婇偅鐗囧唴瀛樺尯閲岀殑鍐呭褰撳仛浠涔堟潵鐪嬪緟銆? 浠庤娉曚笂鐪嬶紝浣犲彧欏繪妸鎸囬拡澹版槑璇彞涓殑鎸囬拡鍚嶅瓧鍜屽悕瀛楀乏杈圭殑鎸囬拡澹版槑絎?鍘繪帀錛屽墿涓嬬殑灝辨槸鎸囬拡鎵鎸囧悜鐨勭被鍨嬨備緥濡傦細 (1)int*ptr;//鎸囬拡鎵鎸囧悜鐨勭被鍨嬫槸int (2)char*ptr;//鎸囬拡鎵鎸囧悜鐨勭殑綾誨瀷鏄痗har (3)int**ptr;//鎸囬拡鎵鎸囧悜鐨勭殑綾誨瀷鏄痠nt* (4)int(*ptr)[3];//鎸囬拡鎵鎸囧悜鐨勭殑綾誨瀷鏄痠nt()[3] (5)int*(*ptr)[4];//鎸囬拡鎵鎸囧悜鐨勭殑綾誨瀷鏄痠nt*()[4] 鍦ㄦ寚閽堢殑綆楁湳榪愮畻涓紝鎸囬拡鎵鎸囧悜鐨勭被鍨嬫湁寰堝ぇ鐨勪綔鐢ㄣ? 鎸囬拡鐨勭被鍨?鍗蟲寚閽堟湰韜殑綾誨瀷)鍜屾寚閽堟墍鎸囧悜鐨勭被鍨嬫槸涓や釜姒傚康銆傚綋浣犲C瓚婃潵瓚婄啛鎮(zhèn)夋椂錛屼綘浼氬彂鐜幫紝鎶婁笌鎸囬拡鎼呭拰鍦ㄤ竴璧風殑"綾誨瀷"榪欎釜姒傚康鍒嗘垚"鎸囬拡鐨勭被鍨?鍜?鎸囬拡鎵鎸囧悜鐨勭被鍨?涓や釜姒傚康錛屾槸綺鵑氭寚閽堢殑鍏抽敭鐐逛箣涓銆傛垜鐪嬩簡涓嶅皯涔︼紝鍙戠幇鏈変簺鍐欏緱宸殑涔︿腑錛屽氨鎶婃寚閽堢殑榪欎袱涓蹇墊悈鍦ㄤ竴璧蜂簡錛屾墍浠ョ湅璧蜂功鏉ュ墠鍚庣煕鐩撅紝瓚婄湅瓚婄硦娑傘? 鎸囬拡鐨勫鹼紝鎴栬呭彨鎸囬拡鎵鎸囧悜鐨勫唴瀛樺尯鎴栧湴鍧銆傛寚閽堢殑鍊兼槸鎸囬拡鏈韓瀛樺偍鐨勬暟鍊鹼紝榪欎釜鍊煎皢琚紪璇戝櫒褰撲綔涓涓湴鍧錛岃屼笉鏄竴涓竴鑸殑鏁板箋傚湪32浣嶇▼搴忛噷錛屾墍鏈夌被鍨嬬殑鎸囬拡鐨勫奸兘鏄竴涓?2浣嶆暣鏁幫紝鍥犱負32浣嶇▼搴忛噷鍐呭瓨鍦板潃鍏ㄩ兘鏄?2浣嶉暱銆?鎸囬拡鎵鎸囧悜鐨勫唴瀛樺尯灝辨槸浠庢寚閽堢殑鍊兼墍浠h〃鐨勯偅涓唴瀛樺湴鍧寮濮嬶紝闀垮害涓簊i zeof(鎸囬拡鎵鎸囧悜鐨勭被鍨?鐨勪竴鐗囧唴瀛樺尯銆備互鍚庯紝鎴戜滑璇翠竴涓寚閽堢殑鍊兼槸XX錛屽氨鐩稿綋浜庤璇ユ寚閽堟寚鍚戜簡浠X涓洪鍦板潃鐨勪竴鐗囧唴瀛樺尯鍩燂紱鎴戜滑璇翠竴涓寚閽堟寚鍚戜簡鏌愬潡鍐呭瓨鍖哄煙錛屽氨鐩稿綋浜庤璇ユ寚閽堢殑鍊兼槸榪欏潡鍐呭瓨鍖哄煙鐨勯鍦板潃銆? 鎸囬拡鎵鎸囧悜鐨勫唴瀛樺尯鍜屾寚閽堟墍鎸囧悜鐨勭被鍨嬫槸涓や釜瀹屽叏涓嶅悓鐨勬蹇點傚湪渚嬩竴涓紝鎸囬拡鎵鎸囧悜鐨勭被鍨嬪凡緇忔湁浜嗭紝浣嗙敱浜庢寚閽堣繕鏈垵濮嬪寲錛屾墍浠ュ畠鎵鎸囧悜鐨勫唴瀛樺尯鏄笉瀛樺湪鐨勶紝鎴栬呰鏄棤鎰忎箟鐨勩? 浠ュ悗錛屾瘡閬囧埌涓涓寚閽堬紝閮藉簲璇ラ棶闂細榪欎釜鎸囬拡鐨勭被鍨嬫槸浠涔堬紵鎸囬拡鎸囩殑綾誨瀷鏄粈涔堬紵璇ユ寚閽堟寚鍚戜簡鍝噷錛? 鎸囬拡鏈韓鎵鍗犳嵁鐨勫唴瀛樺尯 鎸囬拡鏈韓鍗犱簡澶氬ぇ鐨勫唴瀛橈紵浣犲彧瑕佺敤鍑芥暟sizeof(鎸囬拡鐨勭被鍨?嫻嬩竴涓嬪氨鐭ラ亾浜嗐傚湪32浣嶅鉤鍙伴噷錛屾寚閽堟湰韜崰鎹簡4涓瓧鑺傜殑闀垮害銆? 鎸囬拡鏈韓鍗犳嵁鐨勫唴瀛樿繖涓蹇靛湪鍒ゆ柇涓涓寚閽堣〃杈懼紡鏄惁鏄乏鍊兼椂寰堟湁鐢ㄣ? 鎸囬拡鐨勭畻鏈繍綆? 鎸囬拡鍙互鍔犱笂鎴栧噺鍘諱竴涓暣鏁般傛寚閽堢殑榪欑榪愮畻鐨勬剰涔夊拰閫氬父鐨勬暟鍊肩殑鍔犲噺榪愮畻鐨勬剰涔夋槸涓嶄竴鏍風殑銆備緥濡傦細 渚嬩簩錛? 1銆乧hara[20]; 2銆乮nt*ptr=a; ... ... 3銆乸tr++; 鍦ㄤ笂渚嬩腑錛屾寚閽坧tr鐨勭被鍨嬫槸int*,瀹冩寚鍚戠殑綾誨瀷鏄痠nt錛屽畠琚垵濮嬪寲涓烘寚鍚戞暣褰㈠彉閲廰銆傛帴涓嬫潵鐨勭3鍙ヤ腑錛屾寚閽坧tr琚姞浜?錛岀紪璇戝櫒鏄繖鏍峰鐞嗙殑錛氬畠鎶婃寚閽坧tr鐨勫煎姞涓婁簡sizeof(int)錛屽湪32浣嶇▼搴忎腑錛屾槸琚姞涓婁簡4銆傜敱浜庡湴鍧鏄敤瀛楄妭鍋氬崟浣嶇殑錛屾晠ptr鎵鎸囧悜鐨勫湴鍧鐢卞師鏉ョ殑鍙橀噺a鐨勫湴鍧鍚戦珮鍦板潃鏂瑰悜澧炲姞浜?涓瓧鑺傘? 鐢變簬char綾誨瀷鐨勯暱搴︽槸涓涓瓧鑺傦紝鎵浠ワ紝鍘熸潵ptr鏄寚鍚戞暟緇刟鐨勭0鍙峰崟鍏冨紑濮嬬殑鍥涗釜瀛楄妭錛屾鏃舵寚鍚戜簡鏁扮粍a涓粠絎?鍙峰崟鍏冨紑濮嬬殑鍥涗釜瀛楄妭銆? 鎴戜滑鍙互鐢ㄤ竴涓寚閽堝拰涓涓驚鐜潵閬嶅巻涓涓暟緇勶紝鐪嬩緥瀛愶細 渚嬩笁錛? intarray[20]; int*ptr=array; ... //姝ゅ鐣ュ幓涓烘暣鍨嬫暟緇勮祴鍊肩殑浠g爜銆? ... for(i=0;i<20;i++) { (*ptr)++; ptr++錛? } 榪欎釜渚嬪瓙灝嗘暣鍨嬫暟緇勪腑鍚勪釜鍗曞厓鐨勫煎姞1銆傜敱浜庢瘡嬈″驚鐜兘灝嗘寚閽坧tr鍔?錛屾墍浠ユ瘡嬈″驚鐜兘鑳借闂暟緇勭殑涓嬩竴涓崟鍏冦? 鍐嶇湅渚嬪瓙錛? 渚嬪洓錛? 1銆乧hara[20]; 2銆乮nt*ptr=a; ... ... 3銆乸tr+=5; 鍦ㄨ繖涓緥瀛愪腑錛宲tr琚姞涓婁簡5錛岀紪璇戝櫒鏄繖鏍峰鐞嗙殑錛氬皢鎸囬拡ptr鐨勫煎姞涓?涔榮izeof(int)錛屽湪32浣嶇▼搴忎腑灝辨槸鍔犱笂浜?涔?=20銆傜敱浜庡湴鍧鐨勫崟浣嶆槸瀛楄妭錛屾晠鐜板湪鐨刾tr鎵鎸囧悜鐨勫湴鍧姣旇搗鍔?鍚庣殑ptr鎵鎸囧悜鐨勫湴鍧鏉ヨ錛屽悜楂樺湴鍧鏂瑰悜縐誨姩浜?0涓瓧鑺傘傚湪榪欎釜渚嬪瓙涓紝娌″姞5鍓嶇殑ptr鎸囧悜鏁扮粍a鐨勭0鍙峰崟鍏冨紑濮嬬殑鍥涗釜瀛楄妭錛屽姞5鍚庯紝ptr宸茬粡鎸囧悜浜嗘暟緇刟鐨勫悎娉曡寖鍥翠箣澶栦簡銆傝櫧鐒惰繖縐嶆儏鍐靛湪搴旂敤涓婁細鍑洪棶棰橈紝浣嗗湪璇硶涓婂嵈鏄彲浠ョ殑銆傝繖涔熶綋鐜板嚭浜嗘寚閽堢殑鐏墊椿鎬с? 濡傛灉涓婁緥涓紝ptr鏄鍑忓幓5錛岄偅涔堝鐞嗚繃紼嬪ぇ鍚屽皬寮傦紝鍙笉榪噋tr鐨勫兼槸琚噺鍘?涔榮izeof(int)錛屾柊鐨刾tr鎸囧悜鐨勫湴鍧灝嗘瘮鍘熸潵鐨刾tr鎵鎸囧悜鐨勫湴鍧鍚戜綆鍦板潃鏂瑰悜縐誨姩浜?0涓瓧鑺傘? 鎬葷粨涓涓嬶紝涓涓寚閽坧trold鍔犱笂涓涓暣鏁皀鍚庯紝緇撴灉鏄竴涓柊鐨勬寚閽坧trnew錛宲trnew鐨勭被鍨嬪拰ptrold鐨勭被鍨嬬浉鍚岋紝ptrnew鎵鎸囧悜鐨勭被鍨嬪拰ptrold鎵鎸囧悜鐨勭被鍨嬩篃鐩稿悓銆俻trnew鐨勫煎皢姣攑trold鐨勫煎鍔犱簡n涔榮izeof(ptrold鎵鎸囧悜鐨勭被鍨?涓瓧鑺傘傚氨鏄錛宲trnew鎵鎸囧悜鐨勫唴瀛樺尯灝嗘瘮ptrold鎵鎸囧悜鐨勫唴瀛樺尯鍚戦珮鍦板潃鏂瑰悜縐誨姩浜唍涔榮izeof(ptrold鎵鎸囧悜鐨勭被鍨?涓瓧鑺傘? 涓涓寚閽坧trold鍑忓幓涓涓暣鏁皀鍚庯紝緇撴灉鏄竴涓柊鐨勬寚閽坧trnew錛宲trnew鐨勭被鍨嬪拰ptrold鐨勭被鍨嬬浉鍚岋紝ptrnew鎵鎸囧悜鐨勭被鍨嬪拰ptrold鎵鎸囧悜鐨勭被鍨嬩篃鐩稿悓銆俻trnew鐨勫煎皢姣攑trold鐨勫煎噺灝戜簡n涔榮izeof(ptrold鎵鎸囧悜鐨勭被鍨?涓瓧鑺傦紝灝辨槸璇達紝ptrnew鎵鎸囧悜鐨勫唴瀛樺尯灝嗘瘮ptrold鎵鎸囧悜鐨勫唴瀛樺尯鍚戜綆鍦板潃鏂瑰悜縐誨姩浜唍涔榮izeof(ptrold鎵鎸囧悜鐨勭被鍨?涓瓧鑺傘? 榪愮畻絎?amp;鍜? 榪欓噷&鏄彇鍦板潃榪愮畻絎︼紝*鏄?..涔︿笂鍙仛"闂存帴榪愮畻絎?銆? &a鐨勮繍綆楃粨鏋滄槸涓涓寚閽堬紝鎸囬拡鐨勭被鍨嬫槸a鐨勭被鍨嬪姞涓?錛屾寚閽堟墍鎸囧悜鐨勭被鍨嬫槸a鐨勭被鍨嬶紝鎸囬拡鎵鎸囧悜鐨勫湴鍧鍢涳紝閭e氨鏄痑鐨勫湴鍧銆? *p鐨勮繍綆楃粨鏋滃氨浜旇姳鍏棬浜嗐傛諱箣*p鐨勭粨鏋滄槸p鎵鎸囧悜鐨勪笢瑗匡紝榪欎釜涓滆タ鏈夎繖浜涚壒鐐癸細瀹冪殑綾誨瀷鏄痯鎸囧悜鐨勭被鍨嬶紝瀹冩墍鍗犵敤鐨勫湴鍧鏄痯鎵鎸囧悜鐨勫湴鍧銆? 渚嬩簲錛? inta=12; intb; int*p; int**ptr; p=&a; //&a鐨勭粨鏋滄槸涓涓寚閽堬紝綾誨瀷鏄痠nt*錛屾寚鍚戠殑綾誨瀷鏄痠nt錛屾寚鍚戠殑鍦板潃鏄痑鐨勫湴鍧銆? *p=24; //*p鐨勭粨鏋滐紝鍦ㄨ繖閲屽畠鐨勭被鍨嬫槸int錛屽畠鎵鍗犵敤鐨勫湴鍧鏄痯鎵鎸囧悜鐨勫湴鍧錛屾樉鐒訛紝*p灝辨槸鍙橀噺a銆? ptr=&p; //&p鐨勭粨鏋滄槸涓寚閽堬紝璇ユ寚閽堢殑綾誨瀷鏄痯鐨勭被鍨嬪姞涓?錛屽湪榪欓噷鏄痠nt **銆傝鎸囬拡鎵鎸囧悜鐨勭被鍨嬫槸p鐨勭被鍨嬶紝榪欓噷鏄痠nt*銆傝鎸囬拡鎵鎸囧悜鐨勫湴鍧灝辨槸鎸囬拡p鑷繁鐨勫湴鍧銆? *ptr=&b; //*ptr鏄釜鎸囬拡錛?amp;b鐨勭粨鏋滀篃鏄釜鎸囬拡錛屼笖榪欎袱涓寚閽堢殑綾誨瀷鍜屾墍鎸囧悜鐨勭被鍨嬫槸涓鏍風殑錛屾墍浠ョ敤&b鏉ョ粰*ptr璧嬪煎氨鏄鏃犻棶棰樼殑浜嗐? **ptr=34; //*ptr鐨勭粨鏋滄槸ptr鎵鎸囧悜鐨勪笢瑗匡紝鍦ㄨ繖閲屾槸涓涓寚閽堬紝瀵硅繖涓寚閽堝啀鍋氫竴嬈?榪愮畻錛岀粨鏋滃氨鏄竴涓猧nt綾誨瀷鐨勫彉閲忋? 鎸囬拡琛ㄨ揪寮? 涓涓〃杈懼紡鐨勬渶鍚庣粨鏋滃鏋滄槸涓涓寚閽堬紝閭d箞榪欎釜琛ㄨ揪寮忓氨鍙寚閽堣〃寮忋? 涓嬮潰鏄竴浜涙寚閽堣〃杈懼紡鐨勪緥瀛愶細 渚嬪叚錛? inta,b; intarray[10]; int*pa; pa=&a;//&a鏄竴涓寚閽堣〃杈懼紡銆? int**ptr=&pa;//&pa涔熸槸涓涓寚閽堣〃杈懼紡銆? *ptr=&b;//*ptr鍜?amp;b閮芥槸鎸囬拡琛ㄨ揪寮忋? pa=array; pa++;//榪欎篃鏄寚閽堣〃杈懼紡銆? 渚嬩竷錛? char*arr[20]; char**parr=arr;//濡傛灉鎶奱rr鐪嬩綔鎸囬拡鐨勮瘽錛宎rr涔熸槸鎸囬拡琛ㄨ揪寮? char*str; tr=*parr;//*parr鏄寚閽堣〃杈懼紡 tr=*(parr+1);//*(parr+1)鏄寚閽堣〃杈懼紡 tr=*(parr+2);//*(parr+2)鏄寚閽堣〃杈懼紡 鐢變簬鎸囬拡琛ㄨ揪寮忕殑緇撴灉鏄竴涓寚閽堬紝鎵浠ユ寚閽堣〃杈懼紡涔熷叿鏈夋寚閽堟墍鍏鋒湁鐨勫洓涓绱狅細鎸囬拡鐨勭被鍨嬶紝鎸囬拡鎵鎸囧悜鐨勭被鍨嬶紝鎸囬拡鎸囧悜鐨勫唴瀛樺尯錛屾寚閽堣嚜韜崰鎹殑鍐呭瓨銆? 濂戒簡錛屽綋涓涓寚閽堣〃杈懼紡鐨勭粨鏋滄寚閽堝凡緇忔槑紜湴鍏鋒湁浜嗘寚閽堣嚜韜崰鎹殑鍐呭瓨鐨勮瘽錛岃繖涓寚閽堣〃杈懼紡灝辨槸涓涓乏鍊鹼紝鍚﹀垯灝變笉鏄竴涓乏鍊箋? 鍦ㄤ緥涓冧腑錛?amp;a涓嶆槸涓涓乏鍊鹼紝鍥犱負瀹冭繕娌℃湁鍗犳嵁鏄庣‘鐨勫唴瀛樸?ptr鏄竴涓乏鍊鹼紝鍥犱負*ptr榪欎釜鎸囬拡宸茬粡鍗犳嵁浜嗗唴瀛橈紝鍏跺疄*ptr灝辨槸鎸囬拡pa錛屾棦鐒秔a宸茬粡鍦ㄥ唴瀛樹腑鏈変簡鑷繁鐨勪綅緗紝閭d箞*ptr褰撶劧涔熸湁浜嗚嚜宸辯殑浣嶇疆銆? 鏁扮粍鍜屾寚閽堢殑鍏崇郴 鏁扮粍鐨勬暟緇勫悕鍏跺疄鍙互鐪嬩綔涓涓寚閽堛傜湅涓嬩緥錛? 渚嬪叓錛? intarray[10]={0,1,2,3,4,5,6,7,8,9},value; ... ... value=array[0];//涔熷彲鍐欐垚錛歷alue=*array; value=array[3];//涔熷彲鍐欐垚錛歷alue=*(array+3); value=array[4];//涔熷彲鍐欐垚錛歷alue=*(array+4); 涓婁緥涓紝涓鑸岃█鏁扮粍鍚峚rray浠h〃鏁扮粍鏈韓錛岀被鍨嬫槸int[10]錛屼絾濡傛灉鎶奱rray鐪嬪仛鎸囬拡鐨勮瘽錛屽畠鎸囧悜鏁扮粍鐨勭0涓崟鍏冿紝綾誨瀷鏄痠nt*錛屾墍鎸囧悜鐨勭被鍨嬫槸鏁扮粍鍗曞厓鐨勭被鍨嬪嵆int銆傚洜姝?array絳変簬0灝變竴鐐逛篃涓嶅鎬簡銆傚悓鐞嗭紝array+3鏄竴涓寚鍚戞暟緇勭3涓崟鍏冪殑鎸囬拡錛屾墍浠?(array+3)絳変簬3銆傚叾瀹冧緷姝ょ被鎺ㄣ? 渚嬩節(jié)錛? char*str[3]={ "Hello,thisisasample!", "Hi,goodmorning.", "Helloworld" }; chars[80]錛? trcpy(s,str[0]);//涔熷彲鍐欐垚strcpy(s,*str); trcpy(s,str[1]);//涔熷彲鍐欐垚strcpy(s,*(str+1)); trcpy(s,str[2]);//涔熷彲鍐欐垚strcpy(s,*(str+2)); 涓婁緥涓紝str鏄竴涓笁鍗曞厓鐨勬暟緇勶紝璇ユ暟緇勭殑姣忎釜鍗曞厓閮芥槸涓涓寚閽堬紝榪欎簺鎸囬拡鍚勬寚鍚戜竴涓瓧絎︿覆銆傛妸鎸囬拡鏁扮粍鍚峴tr褰撲綔涓涓寚閽堢殑璇濓紝瀹冩寚鍚戞暟緇勭殑絎?鍙峰崟鍏冿紝瀹冪殑綾誨瀷鏄痗har**錛屽畠鎸囧悜鐨勭被鍨嬫槸char*銆? *str涔熸槸涓涓寚閽堬紝瀹冪殑綾誨瀷鏄痗har*錛屽畠鎵鎸囧悜鐨勭被鍨嬫槸char錛屽畠鎸囧悜鐨勫湴鍧鏄瓧絎︿覆"Hello,thisisasample!"鐨勭涓涓瓧絎︾殑鍦板潃錛屽嵆’H’鐨勫湴鍧銆?str+1涔熸槸涓涓寚閽堬紝瀹冩寚鍚戞暟緇勭殑絎?鍙峰崟鍏冿紝瀹冪殑綾誨瀷鏄痗har**錛屽畠鎸囧悜鐨勭被鍨嬫槸char*銆? *(str+1)涔熸槸涓涓寚閽堬紝瀹冪殑綾誨瀷鏄痗har*錛屽畠鎵鎸囧悜鐨勭被鍨嬫槸char錛屽畠鎸囧悜 "Hi,goodmorning."鐨勭涓涓瓧絎?#8217;H’錛岀瓑絳夈? 涓嬮潰鎬葷粨涓涓嬫暟緇勭殑鏁扮粍鍚嶇殑闂銆傚0鏄庝簡涓涓暟緇凾YPEarray[n]錛屽垯鏁扮粍鍚嶇Оarray灝辨湁浜嗕袱閲嶅惈涔夛細絎竴錛屽畠浠h〃鏁翠釜鏁扮粍錛屽畠鐨勭被鍨嬫槸TYPE[n]錛涚浜?錛屽畠鏄竴涓寚閽堬紝璇ユ寚閽堢殑綾誨瀷鏄疶YPE*錛岃鎸囬拡鎸囧悜鐨勭被鍨嬫槸TYPE錛屼篃灝辨槸鏁扮粍鍗曞厓鐨勭被鍨嬶紝璇ユ寚閽堟寚鍚戠殑鍐呭瓨鍖哄氨鏄暟緇勭0鍙峰崟鍏冿紝璇ユ寚閽堣嚜宸卞崰鏈夊崟鐙殑鍐呭瓨鍖猴紝娉ㄦ剰瀹冨拰鏁扮粍絎?鍙峰崟鍏冨崰鎹殑鍐呭瓨鍖烘槸涓嶅悓鐨勩傝鎸囬拡鐨勫兼槸涓嶈兘淇敼鐨勶紝鍗崇被浼糰rray++鐨勮〃杈懼紡鏄敊璇殑銆? 鍦ㄤ笉鍚岀殑琛ㄨ揪寮忎腑鏁扮粍鍚峚rray鍙互鎵紨涓嶅悓鐨勮鑹層? 鍦ㄨ〃杈懼紡sizeof(array)涓紝鏁扮粍鍚峚rray浠h〃鏁扮粍鏈韓錛屾晠榪欐椂sizeof鍑芥暟嫻嬪嚭鐨勬槸鏁翠釜鏁扮粍鐨勫ぇ灝忋? 鍦ㄨ〃杈懼紡*array涓紝array鎵紨鐨勬槸鎸囬拡錛屽洜姝よ繖涓〃杈懼紡鐨勭粨鏋滃氨鏄暟緇勭0鍙峰崟鍏冪殑鍊箋俿izeof(*array)嫻嬪嚭鐨勬槸鏁扮粍鍗曞厓鐨勫ぇ灝忋? 琛ㄨ揪寮廰rray+n錛堝叾涓璶=0錛?錛?錛?...銆傦級涓紝array鎵紨鐨勬槸鎸囬拡錛屾晠array+n鐨勭粨鏋滄槸涓涓寚閽堬紝瀹冪殑綾誨瀷鏄疶YPE*錛屽畠鎸囧悜鐨勭被鍨嬫槸TYPE錛屽畠鎸囧悜鏁扮粍絎琻鍙峰崟鍏冦傛晠sizeof(array+n)嫻嬪嚭鐨勬槸鎸囬拡綾誨瀷鐨勫ぇ灝忋? 渚嬪崄 intarray[10]; int(*ptr)[10]; ptr=&array;錛? 涓婁緥涓璸tr鏄竴涓寚閽堬紝瀹冪殑綾誨瀷鏄痠nt(*)[10]錛屼粬鎸囧悜鐨勭被鍨嬫槸int[10] 錛屾垜浠敤鏁翠釜鏁扮粍鐨勯鍦板潃鏉ュ垵濮嬪寲瀹冦傚湪璇彞ptr=&array涓紝array浠h〃鏁扮粍鏈韓銆? 鏈妭涓彁鍒頒簡鍑芥暟sizeof()錛岄偅涔堟垜鏉ラ棶涓闂紝sizeof(鎸囬拡鍚嶇О)嫻嬪嚭鐨勭┒绔熸槸鎸囬拡鑷韓綾誨瀷鐨勫ぇ灝忓憿榪樻槸鎸囬拡鎵鎸囧悜鐨勭被鍨嬬殑澶у皬錛熺瓟妗堟槸鍓嶈呫備緥濡傦細 int(*ptr)[10]; 鍒欏湪32浣嶇▼搴忎腑錛屾湁錛? izeof(int(*)[10])==4 izeof(int[10])==40 izeof(ptr)==4 瀹為檯涓婏紝sizeof(瀵硅薄)嫻嬪嚭鐨勯兘鏄璞¤嚜韜殑綾誨瀷鐨勫ぇ灝忥紝鑰屼笉鏄埆鐨勪粈涔堢被鍨嬬殑澶у皬銆? 鎸囬拡鍜岀粨鏋勭被鍨嬬殑鍏崇郴 鍙互澹版槑涓涓寚鍚戠粨鏋勭被鍨嬪璞$殑鎸囬拡銆? 渚嬪崄涓錛? tructMyStruct { inta; intb; intc; } MyStructss={20,30,40}; //澹版槑浜嗙粨鏋勫璞s錛屽茍鎶妔s鐨勪笁涓垚鍛樺垵濮嬪寲涓?0錛?0鍜?0銆? MyStruct*ptr=&ss; //澹版槑浜嗕竴涓寚鍚戠粨鏋勫璞s鐨勬寚閽堛傚畠鐨勭被鍨嬫槸MyStruct*,瀹冩寚鍚戠殑綾誨瀷鏄疢yStruct銆? int*pstr=(int*)&ss; //澹版槑浜嗕竴涓寚鍚戠粨鏋勫璞s鐨勬寚閽堛備絾鏄畠鐨勭被鍨嬪拰瀹冩寚鍚戠殑綾誨瀷鍜宲tr鏄笉鍚岀殑銆? 璇烽棶鎬庢牱閫氳繃鎸囬拡ptr鏉ヨ闂畇s鐨勪笁涓垚鍛樺彉閲忥紵 絳旀錛? ptr->a; ptr->b; ptr->c; 鍙堣闂庢牱閫氳繃鎸囬拡pstr鏉ヨ闂畇s鐨勪笁涓垚鍛樺彉閲忥紵 絳旀錛? *pstr錛?/璁塊棶浜唖s鐨勬垚鍛榓銆? *(pstr+1);//璁塊棶浜唖s鐨勬垚鍛榖銆? *(pstr+2)//璁塊棶浜唖s鐨勬垚鍛榗銆? 铏界劧鎴戝湪鎴戠殑MSVC++6.0涓婅皟寮忚繃涓婅堪浠g爜錛屼絾鏄鐭ラ亾錛岃繖鏍蜂嬌鐢╬str鏉ヨ闂粨鏋勬垚鍛樻槸涓嶆瑙勭殑錛屼負浜嗚鏄庝負浠涔堜笉姝h錛岃鎴戜滑鐪嬬湅鎬庢牱閫氳繃鎸囬拡鏉ヨ闂暟緇勭殑鍚勪釜鍗曞厓錛? 渚嬪崄浜岋細 intarray[3]={35,56,37}; int*pa=array; 閫氳繃鎸囬拡pa璁塊棶鏁扮粍array鐨勪笁涓崟鍏冪殑鏂規(guī)硶鏄細 *pa;//璁塊棶浜嗙0鍙峰崟鍏? *(pa+1);//璁塊棶浜嗙1鍙峰崟鍏? *(pa+2);//璁塊棶浜嗙2鍙峰崟鍏? 浠庢牸寮忎笂鐪嬪掓槸涓庨氳繃鎸囬拡璁塊棶緇撴瀯鎴愬憳鐨勪笉姝h鏂規(guī)硶鐨勬牸寮忎竴鏍楓? 鎵鏈夌殑C/C++緙栬瘧鍣ㄥ湪鎺掑垪鏁扮粍鐨勫崟鍏冩椂錛屾繪槸鎶婂悇涓暟緇勫崟鍏冨瓨鏀懼湪榪炵畫鐨勫瓨鍌ㄥ尯閲岋紝鍗曞厓鍜屽崟鍏冧箣闂存病鏈夌┖闅欍備絾鍦ㄥ瓨鏀劇粨鏋勫璞$殑鍚勪釜鎴愬憳鏃訛紝鍦ㄦ煇縐嶇紪璇戠幆澧冧笅錛屽彲鑳戒細闇瑕佸瓧瀵歸綈鎴栧弻瀛楀榻愭垨鑰呮槸鍒殑浠涔堝榻愶紝闇瑕佸湪鐩擱偦涓や釜鎴愬憳涔嬮棿鍔犺嫢騫蹭釜"濉厖瀛楄妭"錛岃繖灝卞鑷村悇涓垚鍛樹箣闂村彲鑳戒細鏈夎嫢騫蹭釜瀛楄妭鐨勭┖闅欍? 鎵浠ワ紝鍦ㄤ緥鍗佷簩涓紝鍗充嬌*pstr璁塊棶鍒頒簡緇撴瀯瀵硅薄ss鐨勭涓涓垚鍛樺彉閲廰錛屼篃涓嶈兘淇濊瘉*(pstr+1)灝變竴瀹氳兘璁塊棶鍒扮粨鏋勬垚鍛榖銆傚洜涓烘垚鍛榓鍜屾垚鍛榖涔嬮棿鍙兘浼氭湁鑻ュ共濉厖瀛楄妭錛岃涓嶅畾*(pstr+1)灝辨濂借闂埌浜嗚繖浜涘~鍏呭瓧鑺傚憿銆傝繖涔熻瘉鏄庝簡鎸囬拡鐨勭伒媧繪с傝鏄綘鐨勭洰鐨勫氨鏄兂鐪嬬湅鍚勪釜緇撴瀯鎴愬憳涔嬮棿鍒板簳鏈夋病鏈夊~鍏呭瓧鑺傦紝鍢匡紝榪欏掓槸涓笉閿欑殑鏂規(guī)硶銆? 榪囨寚閽堣闂粨鏋勬垚鍛樼殑姝g‘鏂規(guī)硶搴旇鏄薄渚嬪崄浜屼腑浣跨敤鎸囬拡ptr鐨勬柟娉曘? 鎸囬拡鍜屽嚱鏁扮殑鍏崇郴 鍙互鎶婁竴涓寚閽堝0鏄庢垚涓轟竴涓寚鍚戝嚱鏁扮殑鎸囬拡銆俰ntfun1(char*,int); int(*pfun1)(char*,int); pfun1=fun1; .... .... inta=(*pfun1)("abcdefg",7);//閫氳繃鍑芥暟鎸囬拡璋冪敤鍑芥暟銆? 鍙互鎶婃寚閽堜綔涓哄嚱鏁扮殑褰㈠弬銆傚湪鍑芥暟璋冪敤璇彞涓紝鍙互鐢ㄦ寚閽堣〃杈懼紡鏉ヤ綔涓哄疄鍙傘? 渚嬪崄涓夛細 intfun(char*); inta; charstr[]="abcdefghijklmn"; a=fun(str); ... ... intfun(char*s) { intnum=0; for(inti=0;i{ num+=*s;s++; } returnnum; } 榪欎釜渚嬪瓙涓殑鍑芥暟fun緇熻涓涓瓧絎︿覆涓悇涓瓧絎︾殑ASCII鐮佸間箣鍜屻傚墠闈㈣浜嗭紝鏁扮粍鐨勫悕瀛椾篃鏄竴涓寚閽堛傚湪鍑芥暟璋冪敤涓紝褰撴妸str浣滀負瀹炲弬浼犻掔粰褰㈠弬s鍚庯紝瀹為檯鏄妸str鐨勫間紶閫掔粰浜唖錛宻鎵鎸囧悜鐨勫湴鍧灝卞拰str鎵鎸囧悜鐨勫湴鍧涓鑷達紝浣嗘槸str鍜宻鍚勮嚜鍗犵敤鍚勮嚜鐨勫瓨鍌ㄧ┖闂淬傚湪鍑芥暟浣撳唴瀵箂榪涜鑷姞1榪愮畻錛屽茍涓嶆剰鍛崇潃鍚屾椂瀵箂tr榪涜浜嗚嚜鍔?榪愮畻銆? 鎸囬拡綾誨瀷杞崲 褰撴垜浠垵濮嬪寲涓涓寚閽堟垨緇欎竴涓寚閽堣祴鍊兼椂錛岃祴鍊煎彿鐨勫乏杈規(guī)槸涓涓寚閽堬紝璧嬪煎彿鐨勫彸杈規(guī)槸涓涓寚閽堣〃杈懼紡銆傚湪鎴戜滑鍓嶉潰鎵涓劇殑渚嬪瓙涓紝緇濆ぇ澶氭暟鎯呭喌涓嬶紝鎸囬拡鐨勭被鍨嬪拰鎸囬拡琛ㄨ揪寮忕殑綾誨瀷鏄竴鏍風殑錛屾寚閽堟墍鎸囧悜鐨勭被鍨嬪拰鎸囬拡琛ㄨ揪寮忔墍鎸囧悜鐨勭被鍨嬫槸涓鏍風殑銆? 渚嬪崄鍥涳細 1銆乫loatf=12.3; 2銆乫loat*fptr=&f; 3銆乮nt*p; 鍦ㄤ笂闈㈢殑渚嬪瓙涓紝鍋囧鎴戜滑鎯寵鎸囬拡p鎸囧悜瀹炴暟f錛屽簲璇ユ庝箞鎼烇紵鏄敤涓嬮潰鐨勮鍙ュ悧錛? p=&f; 涓嶅銆傚洜涓烘寚閽坧鐨勭被鍨嬫槸int*錛屽畠鎸囧悜鐨勭被鍨嬫槸int銆傝〃杈懼紡&f鐨勭粨鏋滄槸涓涓寚閽堬紝鎸囬拡鐨勭被鍨嬫槸float*,瀹冩寚鍚戠殑綾誨瀷鏄痜loat銆備袱鑰呬笉涓鑷達紝鐩存帴璧嬪肩殑鏂規(guī)硶鏄笉琛岀殑銆傝嚦灝戝湪鎴戠殑MSVC++6.0涓婏紝瀵規(guī)寚閽堢殑璧嬪艱鍙ヨ姹傝祴鍊煎彿涓よ竟鐨勭被鍨嬩竴鑷達紝鎵鎸囧悜鐨勭被鍨嬩篃涓鑷達紝鍏跺畠鐨勭紪璇戝櫒涓婃垜娌¤瘯榪囷紝澶у鍙互璇曡瘯銆備負浜嗗疄鐜版垜浠殑鐩殑錛岄渶瑕佽繘琛?寮哄埗綾誨瀷杞崲"錛? p=(int*)&f; 濡傛灉鏈変竴涓寚閽坧錛屾垜浠渶瑕佹妸瀹冪殑綾誨瀷鍜屾墍鎸囧悜鐨勭被鍨嬫敼涓篢YEP*TYPE錛?閭d箞璇硶鏍煎紡鏄細 (TYPE*)p錛? 榪欐牱寮哄埗綾誨瀷杞崲鐨勭粨鏋滄槸涓涓柊鎸囬拡錛岃鏂版寚閽堢殑綾誨瀷鏄疶YPE*錛屽畠鎸囧悜鐨勭被鍨嬫槸TYPE錛屽畠鎸囧悜鐨勫湴鍧灝辨槸鍘熸寚閽堟寚鍚戠殑鍦板潃銆傝屽師鏉ョ殑鎸囬拡p鐨勪竴鍒囧睘鎬ч兘娌℃湁琚慨鏀廣? 涓涓嚱鏁板鏋滀嬌鐢ㄤ簡鎸囬拡浣滀負褰㈠弬錛岄偅涔堝湪鍑芥暟璋冪敤璇彞鐨勫疄鍙傚拰褰㈠弬鐨勭粨鍚堣繃紼嬩腑錛屼篃浼氬彂鐢熸寚閽堢被鍨嬬殑杞崲銆? 渚嬪崄浜旓細 voidfun(char*); inta=125,b; fun((char*)&a); ... ... voidfun(char*s) { charc; c=*(s+3);*(s+3)=*(s+0);*(s+0)=c; c=*(s+2);*(s+2)=*(s+1);*(s+1)=c; } } 娉ㄦ剰榪欐槸涓涓?2浣嶇▼搴忥紝鏁卛nt綾誨瀷鍗犱簡鍥涗釜瀛楄妭錛宑har綾誨瀷鍗犱竴涓瓧鑺傘傚嚱鏁癴un鐨勪綔鐢ㄦ槸鎶婁竴涓暣鏁扮殑鍥涗釜瀛楄妭鐨勯『搴忔潵涓鍊掋傛敞鎰忓埌浜嗗悧錛熷湪鍑芥暟璋冪敤璇彞涓紝瀹炲弬&a鐨勭粨鏋滄槸涓涓寚閽堬紝瀹冪殑綾誨瀷鏄痠nt*錛屽畠鎸囧悜鐨勭被鍨嬫槸int銆傚艦鍙傝繖涓寚閽堢殑綾誨瀷鏄痗har*錛屽畠鎸囧悜鐨勭被鍨嬫槸char銆傝繖鏍鳳紝鍦ㄥ疄鍙傚拰褰㈠弬鐨勭粨鍚堣繃紼嬩腑錛屾垜浠繀欏昏繘琛屼竴嬈′粠int*綾誨瀷鍒癱har*綾誨瀷鐨勮漿鎹€傜粨鍚堣繖涓緥瀛愶紝鎴戜滑鍙互榪欐牱鏉ユ兂璞$紪璇戝櫒榪涜杞崲鐨勮繃紼嬶細緙栬瘧鍣ㄥ厛鏋勯犱竴涓復(fù)鏃舵寚閽坈har*temp錛?鐒跺悗鎵цtemp=(char*)&a錛屾渶鍚庡啀鎶妕emp鐨勫間紶閫掔粰s銆傛墍浠ユ渶鍚庣殑緇撴灉鏄細s鐨勭被鍨嬫槸char*,瀹冩寚鍚戠殑綾誨瀷鏄痗har錛屽畠鎸囧悜鐨勫湴鍧灝辨槸a鐨勯鍦板潃銆? 鎴戜滑宸茬粡鐭ラ亾錛屾寚閽堢殑鍊煎氨鏄寚閽堟寚鍚戠殑鍦板潃錛屽湪32浣嶇▼搴忎腑錛屾寚閽堢殑鍊煎叾瀹炴槸涓涓?2浣嶆暣鏁般傞偅鍙笉鍙互鎶婁竴涓暣鏁板綋浣滄寚閽堢殑鍊肩洿鎺ヨ祴緇欐寚閽堝憿錛熷氨璞′笅闈㈢殑璇彞錛? unsignedinta; TYPE*ptr;//TYPE鏄痠nt錛宑har鎴栫粨鏋勭被鍨嬬瓑絳夌被鍨嬨? ... ... a=20345686; ptr=20345686;//鎴戜滑鐨勭洰鐨勬槸瑕佷嬌鎸囬拡ptr鎸囧悜鍦板潃20345686錛堝崄榪涘埗 錛? ptr=a;//鎴戜滑鐨勭洰鐨勬槸瑕佷嬌鎸囬拡ptr鎸囧悜鍦板潃20345686錛堝崄榪涘埗錛? 緙栬瘧涓涓嬪惂銆傜粨鏋滃彂鐜板悗闈袱鏉¤鍙ュ叏鏄敊鐨勩傞偅涔堟垜浠殑鐩殑灝變笉鑳借揪鍒頒簡鍚楋紵涓嶏紝榪樻湁鍔炴硶錛? unsignedinta; TYPE*ptr;//TYPE鏄痠nt錛宑har鎴栫粨鏋勭被鍨嬬瓑絳夌被鍨嬨? ... ... a=鏌愪釜鏁幫紝榪欎釜鏁板繀欏諱唬琛ㄤ竴涓悎娉曠殑鍦板潃錛? ptr=(TYPE*)a錛?/鍛靛懙錛岃繖灝卞彲浠ヤ簡銆? 涓ユ牸璇存潵榪欓噷鐨?TYPE*)鍜屾寚閽堢被鍨嬭漿鎹腑鐨?TYPE*)榪樹笉涓鏍楓傝繖閲岀殑(TYPE*)鐨勬剰鎬濇槸鎶婃棤絎﹀彿鏁存暟a鐨勫煎綋浣滀竴涓湴鍧鏉ョ湅寰呫備笂闈㈠己璋冧簡a鐨勫煎繀欏諱唬琛ㄤ竴涓悎娉曠殑鍦板潃錛屽惁鍒欑殑璇濓紝鍦ㄤ綘浣跨敤ptr鐨勬椂鍊欙紝灝變細鍑虹幇闈炴硶鎿嶄綔閿欒銆? 鎯蟲兂鑳戒笉鑳藉弽榪囨潵錛屾妸鎸囬拡鎸囧悜鐨勫湴鍧鍗蟲寚閽堢殑鍊煎綋浣滀竴涓暣鏁板彇鍑烘潵銆傚畬 鍏ㄥ彲浠ャ備笅闈㈢殑渚嬪瓙婕旂ず浜嗘妸涓涓寚閽堢殑鍊煎綋浣滀竴涓暣鏁板彇鍑烘潵錛岀劧鍚庡啀鎶婅繖涓暣鏁板綋浣滀竴涓湴鍧璧嬬粰涓涓寚閽堬細 渚嬪崄鍏細 inta=123,b; int*ptr=&a; char*str; b=(int)ptr;//鎶婃寚閽坧tr鐨勫煎綋浣滀竴涓暣鏁板彇鍑烘潵銆? tr=(char*)b;//鎶婅繖涓暣鏁扮殑鍊煎綋浣滀竴涓湴鍧璧嬬粰鎸囬拡str銆? 鐜板湪鎴戜滑宸茬粡鐭ラ亾浜嗭紝鍙互鎶婃寚閽堢殑鍊煎綋浣滀竴涓暣鏁板彇鍑烘潵錛屼篃鍙互鎶婁竴涓暣鏁板煎綋浣滃湴鍧璧嬬粰涓涓寚閽堛? 鎸囬拡鐨勫畨鍏ㄩ棶棰? 鐪嬩笅闈㈢殑渚嬪瓙錛? 渚嬪崄涓冿細 chars=’a’; int*ptr; ptr=(int*)&s; *ptr=1298錛? 鎸囬拡ptr鏄竴涓猧nt*綾誨瀷鐨勬寚閽堬紝瀹冩寚鍚戠殑綾誨瀷鏄痠nt銆傚畠鎸囧悜鐨勫湴鍧灝辨槸s鐨勯鍦板潃銆傚湪32浣嶇▼搴忎腑錛宻鍗犱竴涓瓧鑺傦紝int綾誨瀷鍗犲洓涓瓧鑺傘傛渶鍚庝竴鏉¤鍙ヤ笉浣嗘敼鍙樹簡s鎵鍗犵殑涓涓瓧鑺傦紝榪樻妸鍜宻鐩鎬復(fù)鐨勯珮鍦板潃鏂瑰悜鐨勪笁涓瓧鑺備篃鏀瑰彉浜嗐傝繖涓変釜瀛楄妭鏄共浠涔堢殑錛熷彧鏈夌紪璇戠▼搴忕煡閬擄紝鑰屽啓紼嬪簭鐨勪漢鏄笉澶彲鑳界煡閬撶殑銆備篃璁歌繖涓変釜瀛楄妭閲屽瓨鍌ㄤ簡闈炲父閲嶈鐨勬暟鎹紝涔熻榪欎笁涓瓧鑺傞噷姝eソ鏄▼搴忕殑涓鏉′唬鐮侊紝鑰岀敱浜庝綘瀵規(guī)寚閽堢殑椹檸搴旂敤錛岃繖涓変釜瀛楄妭鐨勫艱鏀瑰彉浜嗭紒榪欎細閫犳垚宕╂簝鎬х殑閿欒銆? 璁╂垜浠啀鏉ョ湅涓渚嬶細 渚嬪崄鍏細 1銆乧hara; 2銆乮nt*ptr=&a; ... ... 3銆乸tr++; 4銆?ptr=115; 璇ヤ緥瀛愬畬鍏ㄥ彲浠ラ氳繃緙栬瘧錛屽茍鑳芥墽琛屻備絾鏄湅鍒版病鏈夛紵絎?鍙ュ鎸囬拡ptr榪涜鑷姞1榪愮畻鍚庯紝ptr鎸囧悜浜嗗拰鏁村艦鍙橀噺a鐩擱偦鐨勯珮鍦板潃鏂瑰悜鐨勪竴鍧楀瓨鍌ㄥ尯銆傝繖鍧楀瓨鍌ㄥ尯閲屾槸浠涔堬紵鎴戜滑涓嶇煡閬撱傛湁鍙兘瀹冩槸涓涓潪甯擱噸瑕佺殑鏁版嵁錛岀敋鑷沖彲鑳芥槸涓鏉′唬鐮併傝岀4鍙ョ珶鐒跺線榪欑墖瀛樺偍鍖洪噷鍐欏叆涓涓暟鎹紒榪欐槸涓ラ噸鐨勯敊璇傛墍浠ュ湪浣跨敤鎸囬拡鏃訛紝紼嬪簭鍛樺績閲屽繀欏婚潪甯告竻妤氾細鎴戠殑鎸囬拡絀剁珶鎸囧悜浜嗗摢閲屻傚湪鐢ㄦ寚閽堣闂暟緇勭殑鏃跺欙紝涔熻娉ㄦ剰涓嶈瓚呭嚭鏁扮粍鐨勪綆绔拰楂樼鐣岄檺錛屽惁鍒欎篃浼氶犳垚綾諱技鐨勯敊璇? 鍦ㄦ寚閽堢殑寮哄埗綾誨瀷杞崲錛歱tr1=(TYPE*)ptr2涓紝濡傛灉sizeof(ptr2鐨勭被鍨?澶т簬sizeof(ptr1鐨勭被鍨?錛岄偅涔堝湪浣跨敤鎸囬拡ptr1鏉ヨ闂畃tr2鎵鎸囧悜鐨勫瓨鍌ㄥ尯鏃舵槸瀹夊叏鐨勩傚鏋渟izeof(ptr2鐨勭被鍨?灝忎簬sizeof(ptr1鐨勭被鍨?錛岄偅涔堝湪浣跨敤鎸囬拡ptr1鏉ヨ闂畃tr2鎵鎸囧悜鐨勫瓨鍌ㄥ尯鏃舵槸涓嶅畨鍏ㄧ殑銆傝嚦浜庝負浠涔堬紝璇昏呯粨鍚堜緥鍗佷竷鏉ユ兂涓鎯籌紝搴旇浼氭槑鐧界殑銆? 鍥炲錛? 鎽樺綍鐨勫埆浜虹殑: C璇█鎵鏈夊鏉傜殑鎸囬拡澹版槑錛岄兘鏄敱鍚勭澹版槑宓屽鏋勬垚鐨勩傚浣曡В璇誨鏉傛寚閽堝0鏄庡憿錛熷彸宸︽硶鍒欐槸涓涓棦钁楀悕鍙堝父鐢ㄧ殑鏂規(guī)硶銆備笉榪囷紝鍙沖乏娉曞垯鍏跺疄騫朵笉鏄疌鏍囧噯閲岄潰鐨勫唴瀹癸紝瀹冩槸浠嶤鏍囧噯鐨勫0鏄庤瀹氫腑褰掔撼鍑烘潵鐨勬柟娉曘侰鏍囧噯鐨勫0鏄庤鍒欙紝鏄敤鏉ヨВ鍐沖浣曞垱寤哄0鏄庣殑錛岃屽彸宸︽硶鍒欐槸鐢ㄦ潵瑙e喅濡備綍杈╄瘑涓涓0鏄庣殑錛屼袱鑰呭彲浠ヨ鏄浉鍙嶇殑銆傚彸宸︽硶鍒欑殑鑻辨枃鍘熸枃鏄繖鏍瘋鐨勶細 The right-left rule: Start reading the declaration from the innermost parentheses, go right, and then go left. When you encounter parentheses, the direction should be reversed. Once everything in the parentheses has been parsed, jump out of it. Continue till the whole declaration has been parsed. 榪欐鑻辨枃鐨勭炕璇戝涓嬶細 鍙沖乏娉曞垯錛氶鍏堜粠鏈閲岄潰鐨勫渾鎷彿鐪嬭搗錛岀劧鍚庡線鍙崇湅錛屽啀寰宸︾湅銆傛瘡褰撻亣鍒板渾鎷彿鏃訛紝灝卞簲璇ユ帀杞槄璇繪柟鍚戙備竴鏃﹁В鏋愬畬鍦嗘嫭鍙烽噷闈㈡墍鏈夌殑涓滆タ錛屽氨璺沖嚭鍦嗘嫭鍙楓傞噸澶嶈繖涓繃紼嬬洿鍒版暣涓0鏄庤В鏋愬畬姣曘? 絎旇呰瀵硅繖涓硶鍒欒繘琛屼竴涓皬灝忕殑淇錛屽簲璇ユ槸浠庢湭瀹氫箟鐨勬爣璇嗙寮濮嬮槄璇伙紝鑰屼笉鏄粠鎷彿璇昏搗錛屼箣鎵浠ユ槸鏈畾涔夌殑鏍囪瘑絎︼紝鏄洜涓轟竴涓0鏄庨噷闈㈠彲鑳芥湁澶氫釜鏍囪瘑絎︼紝浣嗘湭瀹氫箟鐨勬爣璇嗙鍙細鏈変竴涓? 鐜板湪閫氳繃涓浜涗緥瀛愭潵璁ㄨ鍙沖乏娉曞垯鐨勫簲鐢紝鍏堜粠鏈綆鍗曠殑寮濮嬶紝閫愭鍔犳繁錛? int (*func)(int *p); 棣栧厛鎵懼埌閭d釜鏈畾涔夌殑鏍囪瘑絎︼紝灝辨槸func錛屽畠鐨勫闈㈡湁涓瀵瑰渾鎷彿錛岃屼笖宸﹁竟鏄竴涓?鍙鳳紝榪欒鏄巉unc鏄竴涓寚閽堬紝鐒跺悗璺沖嚭榪欎釜鍦嗘嫭鍙鳳紝鍏堢湅鍙寵竟錛屼篃鏄竴涓渾鎷彿錛岃繖璇存槑(*func)鏄竴涓嚱鏁幫紝鑰宖unc鏄竴涓寚鍚戣繖綾誨嚱鏁扮殑鎸囬拡錛屽氨鏄竴涓嚱鏁版寚閽堬紝榪欑被鍑芥暟鍏鋒湁int*綾誨瀷鐨勫艦鍙傦紝榪斿洖鍊肩被鍨嬫槸int銆? int (*func)(int *p, int (*f)(int*)); func琚竴瀵規(guī)嫭鍙峰寘鍚紝涓斿乏杈規(guī)湁涓涓?鍙鳳紝璇存槑func鏄竴涓寚閽堬紝璺沖嚭鎷彿錛屽彸杈逛篃鏈変釜鎷彿錛岄偅涔坒unc鏄竴涓寚鍚戝嚱鏁扮殑鎸囬拡錛岃繖綾誨嚱鏁板叿鏈塱nt *鍜宨nt (*)(int*)榪欐牱鐨勫艦鍙傦紝榪斿洖鍊間負int綾誨瀷銆傚啀鏉ョ湅涓鐪媐unc鐨勫艦鍙俰nt (*f)(int*)錛岀被浼煎墠闈㈢殑瑙i噴錛宖涔熸槸涓涓嚱鏁版寚閽堬紝鎸囧悜鐨勫嚱鏁板叿鏈塱nt*綾誨瀷鐨勫艦鍙傦紝榪斿洖鍊間負int銆? int (*func[5])(int *p); func鍙寵竟鏄竴涓猍]榪愮畻絎︼紝璇存槑func鏄竴涓叿鏈?涓厓绱犵殑鏁扮粍錛宖unc鐨勫乏杈規(guī)湁涓涓?錛岃鏄巉unc鐨勫厓绱犳槸鎸囬拡錛岃娉ㄦ剰榪欓噷鐨?涓嶆槸淇グfunc鐨勶紝鑰屾槸淇グfunc[5]鐨勶紝鍘熷洜鏄痆]榪愮畻絎︿紭鍏堢駭姣?楂橈紝func鍏堣窡[]緇撳悎錛屽洜姝?淇グ鐨勬槸func[5]銆傝煩鍑鴻繖涓嫭鍙鳳紝鐪嬪彸杈癸紝涔熸槸涓瀵瑰渾鎷彿錛岃鏄巉unc鏁扮粍鐨勫厓绱犳槸鍑芥暟綾誨瀷鐨勬寚閽堬紝瀹冩墍鎸囧悜鐨勫嚱鏁板叿鏈塱nt*綾誨瀷鐨勫艦鍙傦紝榪斿洖鍊肩被鍨嬩負int銆? int (*(*func)[5])(int *p); func琚竴涓渾鎷彿鍖呭惈錛屽乏杈瑰張鏈変竴涓?錛岄偅涔坒unc鏄竴涓寚閽堬紝璺沖嚭鎷彿錛屽彸杈規(guī)槸涓涓猍]榪愮畻絎﹀彿錛岃鏄巉unc鏄竴涓寚鍚戞暟緇勭殑鎸囬拡錛岀幇鍦ㄥ線宸︾湅錛屽乏杈規(guī)湁涓涓?鍙鳳紝璇存槑榪欎釜鏁扮粍鐨勫厓绱犳槸鎸囬拡錛屽啀璺沖嚭鎷彿錛屽彸杈瑰張鏈変竴涓嫭鍙鳳紝璇存槑榪欎釜鏁扮粍鐨勫厓绱犳槸鎸囧悜鍑芥暟鐨勬寚閽堛傛葷粨涓涓嬶紝灝辨槸錛歠unc鏄竴涓寚鍚戞暟緇勭殑鎸囬拡錛岃繖涓暟緇勭殑鍏冪礌鏄嚱鏁版寚閽堬紝榪欎簺鎸囬拡鎸囧悜鍏鋒湁int*褰㈠弬錛岃繑鍥炲間負int綾誨瀷鐨勫嚱鏁般? int (*(*func)(int *p))[5]; func鏄竴涓嚱鏁版寚閽堬紝榪欑被鍑芥暟鍏鋒湁int*綾誨瀷鐨勫艦鍙傦紝榪斿洖鍊兼槸鎸囧悜鏁扮粍鐨勬寚閽堬紝鎵鎸囧悜鐨勬暟緇勭殑鍏冪礌鏄叿鏈?涓猧nt鍏冪礌鐨勬暟緇勩? 瑕佹敞鎰忔湁浜涘鏉傛寚閽堝0鏄庢槸闈炴硶鐨勶紝渚嬪錛? int func(void) [5]; func鏄竴涓繑鍥炲間負鍏鋒湁5涓猧nt鍏冪礌鐨勬暟緇勭殑鍑芥暟銆備絾C璇█鐨勫嚱鏁拌繑鍥炲間笉鑳戒負鏁扮粍錛岃繖鏄洜涓哄鏋滃厑璁稿嚱鏁拌繑鍥炲間負鏁扮粍錛岄偅涔堟帴鏀惰繖涓暟緇勭殑鍐呭鐨勪笢瑗匡紝涔熷繀欏繪槸涓涓暟緇勶紝浣咰璇█鐨勬暟緇勫悕鏄竴涓彸鍊鹼紝瀹冧笉鑳戒綔涓哄乏鍊兼潵鎺ユ敹鍙︿竴涓暟緇勶紝鍥犳鍑芥暟榪斿洖鍊間笉鑳戒負鏁扮粍銆? int func[5](void); func鏄竴涓叿鏈?涓厓绱犵殑鏁扮粍錛岃繖涓暟緇勭殑鍏冪礌閮芥槸鍑芥暟銆傝繖涔熸槸闈炴硶鐨勶紝鍥犱負鏁扮粍鐨勫厓绱犻櫎浜嗙被鍨嬪繀欏諱竴鏍峰錛屾瘡涓厓绱犳墍鍗犵敤鐨勫唴瀛樼┖闂翠篃蹇呴』鐩稿悓錛屾樉鐒跺嚱鏁版槸鏃犳硶杈懼埌榪欎釜瑕佹眰鐨勶紝鍗充嬌鍑芥暟鐨勭被鍨嬩竴鏍鳳紝浣嗗嚱鏁版墍鍗犵敤鐨勭┖闂撮氬父鏄笉鐩稿悓鐨勩? 浣滀負緇冧範錛屼笅闈㈠垪鍑犱釜澶嶆潅鎸囬拡澹版槑緇欒鑰呰嚜宸辨潵瑙f瀽錛岀瓟妗堟斁鍦ㄧ鍗佺珷閲屻? int (*(*func)[5][6])[7][8]; int (*(*(*func)(int *))[5])(int *); int (*(*func[7][8][9])(int*))[5]; ??????? 瀹為檯褰撲腑錛岄渶瑕佸0鏄庝竴涓鏉傛寚閽堟椂錛屽鏋滄妸鏁翠釜澹版槑鍐欐垚涓婇潰鎵紺虹殑褰㈠紡錛屽紼嬪簭鍙鎬ф槸涓澶ф崯瀹熾傚簲璇ョ敤typedef鏉ュ澹版槑閫愬眰鍒嗚В錛屽寮哄彲璇繪э紝渚嬪瀵逛簬澹版槑錛? int (*(*func)(int *p))[5]; 鍙互榪欐牱鍒嗚В錛? typedef int (*PARA)[5]; typedef PARA (*func)(int *); 榪欐牱灝卞鏄撶湅寰楀浜嗐? 闄呭綋涓紝闇瑕佸0鏄庝竴涓鏉傛寚閽堟椂錛屽鏋滄妸鏁翠釜澹版槑鍐欐垚涓婇潰鎵紺虹殑褰㈠紡錛屽紼嬪簭鍙鎬ф槸涓澶ф崯瀹熾傚簲璇ョ敤typedef鏉ュ澹版槑閫愬眰鍒嗚В錛屽寮哄彲璇繪э紝渚嬪瀵逛簬澹版槑錛? int (*(*func)(int *p))[5]; 鍙互榪欐牱鍒嗚В錛? typedef int (*PARA)[5]; typedef PARA (*func)(int *); 榪欎釜姣旇緝鏈夊疄闄? 鍏跺畠閭d箞澶嶆潅鐨勫畾涔夊湪鐜板疄浣跨敤涓竴鐐規(guī)剰涔夐兘娌℃湁,灞炲啓緙栬瘧鍣ㄧ殑浜虹爺絀剁殑闂 ,濡備互涓? int (*(*func)[5][6])[7][8]; int (*(*(*func)(int *))[5])(int *); int (*(*func[7][8][9])(int*))[5];
*鏂囩珷鏍囬錛氭繁鍏ョ悊瑙璇█鎸囬拡鐨勫ゥ縐?br> *鍘?浣?鑰咃細涓嶇ゥ
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*鍙?甯?鑰咃細鑷敱楦?br> *鍙戝竷綾誨瀷錛氳漿杞?br> *鍙戝竷鏃ユ湡錛?007-12-31
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