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鍘熷洜鍏抽敭灝卞湪浜庢晥鐜囥係trousstrup璇磋繃錛堝緢緇忓吀錛屽懙鍛碉級錛欳++鐨勬寚瀵煎師鍒欎箣涓鏄紝涓嶈涓轟笉浣跨敤鐨勭壒鎬т粯鍑轟唬浠鳳紙鍐呭瓨鎴栧鐞嗘椂闂達級銆?br />
鍥犱負閫氬父鎯呭喌涓嬶紝緙栬瘧鍣ㄥ鐞嗚櫄鍑芥暟鐨勬柟娉曚負錛氱粰姣忎釜瀵硅薄娣誨姞涓涓殣钘忔垚鍛橈紝璇ユ垚鍛樹腑淇濆瓨浜嗕竴涓寚鍚戝嚱鏁板湴鍧鏁扮粍鐨勬寚閽堬紙縐頒負铏氬嚱鏁拌〃 virtual function table,vtbl錛夈傝櫄鍑芥暟琛ㄤ腑瀛樺偍浜嗕負綾誨璞¤繘琛屽0鏄庣殑铏氬嚱鏁扮殑鍦板潃銆備緥濡傦紝鍩虹被鍖呭惈涓涓寚閽堬紝鎸囧悜浜嗗熀綾諱腑鎵鏈夎櫄鍑芥暟鐨勫湴鍧琛紝媧劇敓綾誨璞″皢鍖呭惈涓涓寚鍚戠嫭绔嬪湴鍧琛ㄧ殑鎸囬拡錛屽鏋滄淳鐢熺被鎻愪緵浜嗚櫄鍑芥暟鐨勬柊瀹氫箟錛岃铏氬嚱鏁拌〃灝嗕繚瀛樻柊鍑芥暟鐨勫湴鍧錛屽鏋滄病鏈夐噸鏂板畾涔夛紝鍒欎繚鐣欏師濮嬬増鏈殑鍦板潃銆傝皟鐢ㄨ櫄鍑芥暟鏃訛紝紼嬪簭灝嗘煡鐪嬪瓨鍌ㄥ湪瀵硅薄涓殑vtbl鍦板潃錛岀劧鍚庤漿鍚戠浉搴旂殑鍑芥暟鍦板潃琛ㄣ?br />
鎵浠ユ樉鑰屾槗瑙佺殑鏄紝浣跨敤铏氬嚱鏁版椂錛屽湪鍐呭瓨鍜屾墽琛岄熷害鏂歸潰鏈変竴瀹氱殑棰濆鎴愭湰錛屽寘鎷細
姣忎釜瀵硅薄閮藉皢澧炲ぇ錛屽澶ч噺涓哄瓨鍌ㄥ湴鍧鐨勭┖闂達紱瀵規瘡涓被錛岀紪璇戝櫒閮藉垱寤轟竴涓櫄鍑芥暟鍦板潃琛紙鏁扮粍錛夛紱姣忎釜鍑芥暟璋冪敤閮介渶瑕佹墽琛屼竴姝ラ澶栫殑鎿嶄綔錛屽嵆鍒拌〃涓煡鎵懼湴鍧銆?br />
鎵浠ュ挶浠鍏繪垚鐨勪範鎯槸錛屽湪璁捐綾繪椂錛屽彲鑳藉寘鍚竴浜涗笉鍦ㄦ淳鐢熺被閲嶆柊瀹氫箟鐨勬垚鍛樺嚱鏁幫紝閭d箞榪欎簺鍑芥暟灝變笉瑕佽緗負铏氬嚱鏁般傝繖鏍烽鍏堜細鏈夋洿濂界殑鏁堢巼錛屽叾嬈¤澹版槑涓鴻櫄鍑芥暟鐨勬垚鍛樺嚱鏁板氨琛ㄦ槑鏄鏈熷湪媧劇敓綾諱腑浼氳閲嶆柊瀹氫箟鐨勶紝鍦ㄩ槄璇諱唬鐮佹椂涔熷皢姣旇緝鏂逛究銆?img src ="http://www.shnenglu.com/firehutter/aggbug/15785.html" width = "1" height = "1" />
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浣跨敤鏂偣璺熻釜涔嬪悗鍙戠幇閿欒鍑哄湪浣跨敤TQuery鏃舵墽琛宱pen鏂規硶鏃訛紝鍥炶拷鏍規簮錛屽緱鍑轟互涓嬪弽棣堬細
鎵ц瀹岃繖鍙ヤ箣鍚庯紝鎸夋甯告儏鍐碉紝鍙傛暟PId搴旇琚祴浜堜簡涓涓暣褰㈠鹼紝浣嗘槸Debug璺熻釜鏄劇ず鍏跺艱繕鏄窡鏈祴鍊煎墠鏄悓鏍瘋〃紺虹殑鏈煡鍊箋傛墍浠ュ湪鎵цopen鏂規硶鏃跺嚭閿欎簡銆?/p>
濡傛灉鎴戜笉鏄敤璇ユ柟娉曪紝鐩存帴鎶奡QL璇彞鍐欐錛?br />
榪愯姝e父
鎴栬呯敤
涔熻繍琛屾甯?/p>
鏌ヤ簡涓嬶紝鍘熸潵緇欏弬鏁拌祴鍊肩殑鏂規硶騫舵病鏈夐敊璇紝緙栬瘧涔熻兘閫氳繃錛屽喌涓斾互鍓嶈紼嬪簭鑲畾鏄兘姝e父榪愯鐨勩傘傜湡鏄鎬負浠涔堝湪鎴戣繖閲屽氨璧嬩笉涓婂箋傘傝皟璇曚簡寰堜箙涔熸病鑳芥壘鍒板師鍥狅紝鍙ソ浣滅艦錛屼負浜嗛『鍒╄繍琛岋紝鍙兘鏀逛負sprintf鍜岀洿鎺ヨ繛鎺ュ瓧絎︿覆鐨勬柟寮忋?br />鍦ㄨ繖閲岃涓婁竴絎旓紝甯屾湜浠ュ悗鑳藉鎵懼埌鍘熷洜銆傘傘?br />
鏈枃瀵規垜鍓嶉潰鍑犵瘒闅忕瑪涓彁鍒扮殑闂涔熶綔鍑轟簡涓涓葷粨錛屾劅瑙夊緢鏈夊繀瑕佽涓嬫潵銆?br />浠ヤ笂鍐呭鍘熸枃寮曠敤鑷弬鑰冧功綾嶄腑鍐呭銆?br />
鍙傝冧功綾嶏細C++PrimerPlus author:Stephen Prata
浠ヤ笂浠g爜鐗囨柇涓紝pc1鍜宲c3涓哄竷灞new鎿嶄綔絎︽潵鍒嗛厤鍐呭瓨錛岃宲c2鍜宲c4涓哄父瑙刵ew鎿嶄綔絎︽潵鍒嗛厤鍐呭瓨聽銆?br />瀵逛簬甯歌new鎿嶄綔絎﹀垎閰嶇殑鍐呭瓨錛屽彲浠ョ洿鎺ヤ嬌鐢細delete聽pc2; 榪欐牱鐨勮鍙ユ搷浣滄潵閲婃斁鍐呭瓨銆?br />
鑰屽浜庡竷灞new鎿嶄綔絎﹀垎閰嶇殑鍐呭瓨灝變笉鑳借繖鏍峰仛錛?span style="COLOR: #000000">delete聽pc1;
鍥犱負pc1鍜宲c3騫舵病鏈夌洿鎺ユ敹鍒皀ew鎿嶄綔絎﹁繑鍥炵殑鍦板潃錛岃屾槸鐢卞竷灞鎿嶄綔絎︽寚鍚戜簡buffer鐨勫湴鍧錛宯ew/delete緋葷粺鐭ラ亾宸插垎閰嶇殑512瀛楄妭鍧梑uffer錛屼絾瀵瑰竷灞new鎿嶄綔絎﹀璇ュ唴瀛樺潡鍋氫簡浣曠澶勭悊涓鏃犳墍鐭ャ?br />鍙︿竴鏂歸潰錛宐uffer鐨勫湴鍧鏄敤new []鍒濆鍖栫殑錛屽洜姝ゅ繀欏諱嬌鐢?span class="Code">delete[]鑰屼笉鏄?span class="Code">delete銆?br />娉ㄦ剰錛氬嵆浣縝uffer鏄嬌鐢╪ew鑰屼笉鏄痭ew[]鍒濆鍖栫殑錛?span class="Code">delete pc1 涔熷皢閲婃斁buffer錛岃屼笉鏄痯c1銆?/font>
浠ヤ笂鐨勪唬鐮佺‘瀹為噴鏀句簡buffer錛?font color="#000000">delete [] buffer;
浣嗘槸鐢辨浜х敓浜嗘柊鐨勯棶棰橈紝瀹冩病鏈変負甯冨眬new鎿嶄綔絎﹀湪璇ュ唴瀛樺潡涓垱寤虹殑瀵硅薄璋冪敤鏋愭瀯鍑芥暟錛屾垜浠彧闇瑕佸湪鏋愭瀯鍑芥暟涓斁鍏ヤ竴孌墊樉紺鴻鍙ュ氨鍙互娓呮鐨勭湅鍒幫紝紼嬪簭騫舵病鏈夐攢姣佲淛ustTesting鈥濆拰鈥淏ad Idea鈥濓紝涔熷氨鏄痯c1鍜宲c3鎸囧悜鐨勫璞°?br />閭d箞榪欓噷灝遍渶瑕佹垜浠樉寮忕殑涓哄竷灞new鎿嶄綔絎﹀垱寤虹殑瀵硅薄璋冪敤鏋愭瀯鍑芥暟銆傛甯告儏鍐典笅灝嗚嚜鍔ㄨ皟鐢ㄦ瀽鏋勫嚱鏁幫紝榪欐槸闇瑕佹樉紺鴻皟鐢ㄦ瀽鏋勫嚱鏁扮殑灝戞暟鍑犵鎯呭喌涔嬩竴銆?/font>
鏄懼紡璋冪敤鏋愭瀯鍑芥暟鏃訛紝蹇呴』鎸囧畾瑕侀攢姣佺殑瀵硅薄銆傜敱浜庢湁鎸囧悜瀵硅薄鐨勬寚閽堬紝鍥犳鍙互榪欐牱鍐欙細
鎶婅繖孌典唬鐮佹斁鍒?span class="Code">delete [] buffer;涔嬪墠錛岃繖孌電▼搴忔墠綆楀畬鏁存棤閿欍?/p>
鍙傝冧功綾嶏細C++PrimerPlus author:Stephen Prata
鍦ㄦ瀯閫犲嚱鏁板拰鏋愭瀯鍑芥暟瀹氫箟褰撲腑鏈夊涓嬪畾涔夛細
閭d箞鍦ㄧ▼搴忓綋涓鏋滄湁浠ヤ笅浠g爜錛?/p>
浠ヤ笂鐨勭浜屾潯鍒濆鍖栬鍙ュ皢浼氳皟鐢ㄤ粈涔堟瀯閫犲嚱鏁幫紵璁頒綇錛岃繖縐嶅艦寮忕殑鍒濆鍖栫瓑鏁堜簬涓嬮潰鐨勮鍙ワ細
鍥犱負sports鐨勭被鍨嬩負StringBad錛屽洜姝ょ浉搴旂殑鏋勯犲嚱鏁板師鍨嬪簲璇ュ涓嬶細
褰撴垜浠嬌鐢ㄤ竴涓璞℃潵鍒濆鍖栧彟涓涓璞℃椂錛岀紪璇戝櫒灝嗚嚜鍔ㄧ敓鎴愪笂榪版瀯閫犲嚱鏁幫紙縐頒負澶嶅埗鏋勯犲嚱鏁幫紝鍥犱負瀹冨垱寤哄璞$殑涓涓壇鏈級銆?br />鐜板湪鎴戜滑涓嶅Θ鎬葷粨涓涓嬫墍璋撶殑闅愬紡鎴愬憳鍑芥暟錛屽嵆C++鑷姩鎻愪緵浜嗕互涓嬭繖浜涙垚鍛樺嚱鏁幫細
鐜板湪鎴戜滑鏉ョ湅鐪嬫垜浠病鏈夊畾涔夊鍒舵瀯閫犲嚱鏁扮殑鎯呭喌涓嬭皟鐢ㄩ殣寮忓鍒舵瀯閫犲嚱鏁板皢浼氬嚭鐜頒粈涔堟儏鍐點?br />浠庢瀯閫犲嚱鏁板畾涔夌殑浠g爜鐗囨柇鍙互鐪嬪埌錛屽綋涓嬌鐢╪ew鎿嶄綔絎﹀垵濮嬪寲浜嗕竴涓寚閽坰tr錛岃岄殣寮忕殑澶嶅埗鏋勯犲嚱鏁版槸鎸夊艱繘琛屽鍒剁殑錛岄偅涔堝浜庢寚閽坰tr錛屽皢浼氳繘琛屽涓嬪鍒訛細
榪欓噷澶嶅埗鐨勪笉鏄瓧絎︿覆錛岃屾槸涓涓寚鍚戝瓧絎︿覆鐨勬寚閽堬紒涔熷氨鏄錛屾垜浠皢寰楀埌涓や釜鎸囧悜鍚屼竴涓瓧絎︿覆鐨勬寚閽堬紒鐢辨浼氫駭鐢熺殑闂灝嗕笉璦鑰屽柣銆傚綋鍏朵腑涓涓璞¤皟鐢ㄤ簡鏋愭瀯鍑芥暟涔嬪悗錛屽叾str鎸囧悜鐨勫唴瀛樺皢琚噴鏀撅紝榪欎釜鏃跺欐垜浠鏋滆皟鐢ㄥ彟涓涓璞★紝鍏秙tr鎸囧悜鐨勫湴鍧鏁版嵁浼氭槸浠涔堬紵寰堟槑鏄懼皢浼氬嚭鐜頒笉鍙鏂欑殑緇撴灉銆?/p>
鎵浠ョ敱姝ゅ彲瑙侊紝濡傛灉綾諱腑鍖呭惈浜嗕嬌鐢╪ew鍒濆鍖栫殑鎸囬拡鎴愬憳錛屽簲褰撳畾涔変竴涓鍒舵瀯閫犲嚱鏁幫紝浠ュ鍒舵寚鍚戠殑鏁版嵁錛岃屼笉鏄寚閽堬紝榪欒縐頒負娣卞害澶嶅埗銆傚洜涓洪粯璁ょ殑嫻呭鍒訛紙鎴栨垚涓烘垚鍛樺鍒訛級浠呮祬嫻呯殑璧嬪兼寚閽堜俊鎭?/strong>
鎴戜滑鍐嶇湅浠ヤ笅浠g爜鐗囨柇錛屾垜浠◢鍋氫慨鏀癸細
榪欓噷鐨勬渶鍚庝竴琛屽皢涓庝互涓婁緥瀛愭湁鎵鍖哄埆錛岀幇鍦ㄦ槸灝嗗凡鏈夊璞¤祴緇欏彟涓涓凡鏈夊璞★紝榪欏皢浼氶噰鍙栧叾浠栨搷浣滐紝鍗充嬌鐢ㄩ噸杞界殑璧嬪兼搷浣滅銆傦紙鎴戜滑闇瑕佺煡閬撶殑鏄細鍒濆鍖栨繪槸浼氳皟鐢ㄥ鍒舵瀯閫犲嚱鏁幫紝鑰屼嬌鐢?鎿嶄綔絎︽椂涔熷彲鑳借皟鐢ㄨ祴鍊兼搷浣滅錛夊洜涓篊++鍏佽瀵硅薄璧嬪鹼紝榪欐槸閫氳繃鑷姩涓虹被閲嶈澆璧嬪兼搷浣滅瀹炵幇鐨勩傚叾鍘熷瀷濡備笅錛?/p>
瀹冩帴鍙楀茍榪斿洖涓涓寚鍚戠被瀵硅薄鐨勫紩鐢ㄣ?br />涓庨殣寮忕殑澶嶅埗鏋勯犲嚱鏁頒竴鏍鳳紝闅愬紡鐨勫璞¤祴鍊兼搷浣滅涔熶細浜х敓鍚屾牱鐨勯棶棰橈紝鍗沖寘鍚簡浣跨敤new鍒濆鍖栫殑鎸囬拡鎴愬憳鏃訛紝鍙細閲囩敤嫻呭鍒躲傛墍浠ユ垜浠渶瑕佷嬌鐢ㄥ悓鏍風殑瑙e喅鍔炴硶錛?strong>鍗沖畾涔変竴涓噸杞界殑璧嬪兼搷浣滅鏉ュ疄鐜版繁搴﹀鍒躲?/strong>
鎵浠ョ患涓婃墍榪幫紝濡傛灉綾諱腑鍖呭惈浜嗕嬌鐢╪ew鍒濆鍖栫殑鎸囬拡鎴愬憳錛屾垜浠簲璇ユ樉寮忓畾涔変竴涓鍒舵瀯閫犲嚱鏁板拰涓涓噸杞界殑璧嬪兼搷浣滅鏉ュ疄鐜板叾娣卞害澶嶅埗錛岄伩鍏嶇敱姝ゅ甫鏉ョ殑鎴愬憳澶嶅埗闂
鍙傝冧功綾嶏細C++PrimerPlus author:Stephen Prata