锘??xml version="1.0" encoding="utf-8" standalone="yes"?>国产精品视频xxxx,欧美日韩不卡合集视频,国产精品欧美激情http://m.shnenglu.com/mymsdn/category/4479.htmlMyMSDN璁板綍寮鍙戞柊鐭ラ亾zh-cnSun, 04 Apr 2010 17:01:53 GMTSun, 04 Apr 2010 17:01:53 GMT60灝嗘暟緇勪綔涓哄疄鍙備紶閫?/title><link>http://m.shnenglu.com/mymsdn/archive/2009/02/19/74333.html</link><dc:creator>volnet</dc:creator><author>volnet</author><pubDate>Thu, 19 Feb 2009 13:35:00 GMT</pubDate><guid>http://m.shnenglu.com/mymsdn/archive/2009/02/19/74333.html</guid><wfw:comment>http://m.shnenglu.com/mymsdn/comments/74333.html</wfw:comment><comments>http://m.shnenglu.com/mymsdn/archive/2009/02/19/74333.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.shnenglu.com/mymsdn/comments/commentRss/74333.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/mymsdn/services/trackbacks/74333.html</trackback:ping><description><![CDATA[<!--MyMSDN style!--><link rel="stylesheet" type="text/css" > <style type="text/css"> body{background-color:#eeeeee;} </style> <p>鍦–++涓垜浠簲璇ュ皯鐢ㄦ寚閽堬紝澶氱敤寮曠敤錛屽師鍥犺澶у鑷鎼滅儲銆傚湪浼犻掓暟緇勭殑鏃跺欐垜浠渶瑕佹牸澶栨敞鎰忥紝鍏堣鎴戜滑鐪嬩竴涓畝鍗曠殑鑼冧緥銆?/p><pre class="gc-code"><span style="color: green">// PassArray.cpp : 瀹氫箟鎺у埗鍙板簲鐢ㄧ▼搴忕殑鍏ュ彛鐐廣? // </span><span style="color: blue">#include </span><span style="color: #a31515">"stdafx.h" </span><span style="color: blue">#include </span><span style="color: #a31515"><iostream> </span><span style="color: blue">using namespace </span>std; <span style="color: blue">template </span><<span style="color: blue">typename </span>T> <span style="color: blue">void </span>Func1(T, T); <span style="color: blue">template </span><<span style="color: blue">typename </span>T> <span style="color: blue">void </span>Func2(T&, T&); <span style="color: blue">void </span>Func3(<span style="color: blue">int </span>(&)[10], <span style="color: blue">int </span>(&)[12]); <span style="color: blue">int </span>_tmain(<span style="color: blue">int </span>argc, _TCHAR* argv[]) { <span style="color: blue">int </span>a[10], b[12]; Func1(a, b); <span style="border-bottom: yellow 1px solid; border-left: yellow 1px solid; color: red; border-top: yellow 1px solid; border-right: yellow 1px solid">Func2(a, b);</span> Func3(a, b); <span style="color: blue">return </span>0; } <span style="color: blue">template </span><<span style="color: blue">typename </span>T> <span style="color: blue">void </span>Func1(T, T) { cout<<<span style="color: #a31515">"Func1.invoked!"</span><<endl; } <span style="color: blue">template </span><<span style="color: blue">typename </span>T> <span style="color: blue">void </span>Func2(T&, T&) { cout<<<span style="color: #a31515">"Func2.invoked!"</span><<endl; } <span style="color: blue">void </span>Func3(<span style="color: blue">int </span>(&m)[10], <span style="color: blue">int </span>(&n)[12]) { cout<<<span style="color: #a31515">"Func3.invoked!"</span><<endl; }</pre> <p>棣栧厛榪欎釜鑼冧緥鏃犳硶緙栬瘧閫氳繃錛?/p> <p><a href="http://m.shnenglu.com/images/cppblog_com/mymsdn/WindowsLiveWriter/d6325f77f4c8_12F7F/image_2.png"><img style="border-right-width: 0px; display: inline; border-top-width: 0px; border-bottom-width: 0px; border-left-width: 0px" title="error C2782" border="0" alt="error C2782" src="http://m.shnenglu.com/images/cppblog_com/mymsdn/WindowsLiveWriter/d6325f77f4c8_12F7F/image_thumb.png" width="435" height="41"></a> </p> <p>鍘熷洜灝卞嚭鍦ㄧ被鍨嬫帹鏂笂銆傛牴鎹畾涔夛紝Func2鐨勭被鍨嬪繀欏繪槸T&錛屼篃灝辨槸璇翠紶閫掑疄鍙傜殑鏃跺欙紝涓や釜褰㈠弬蹇呴』鏄浉鍚岀殑錛岃岃繖涓鐐瑰湪妯℃澘緙栫▼涓氨浼氱敱緙栬瘧鍣ㄦ潵璐熻矗鎺ㄦ柇銆?/p> <p>Func1錛?/p> <p>璋冪敤Func1(a, b)鍒欐帹鏂殑綾誨瀷鍒嗗埆鏄疐unc1(int*, int*)錛岃皟鐢ㄥ嚱鏁板皢浼氳嚜鍔ㄥ皢鏁扮粍鐨勯鍦板潃鎸囬拡浣滀負瀹炲弬榪涜浼犻掞紝鍥犳綾誨瀷鎺ㄦ柇涓ゅ艦鍙傜浉鍚岋紝緙栬瘧閫氳繃錛?/p> <p>Func2錛?/p> <p>璋冪敤Func2(a, b)鍥犱負鎴戜滑甯屾湜鎸夊紩鐢ㄧ殑鏂瑰紡榪涜瀹炲弬浼犻掞紝鍥犳闇瑕侀伒寰繖鏍風殑瑙勫緥錛?/p> <p class="note">錛圥208錛夊鏋滃艦鍙傛槸鏁扮粍鐨勫紩鐢紝緙栬瘧鍣ㄥ皢涓嶄細灝嗘暟緇勫疄鍙傝漿鍖栦負鎸囬拡錛岃屾槸浼犻掓暟緇勫紩鐢ㄧ殑鏈韓銆傚湪榪欑鎯呭喌涓嬶紝鏁扮粍澶у皬鎴愪負褰㈠弬鍜屽疄鍙傜被鍨嬬殑涓閮ㄥ垎銆?/p> <p>鎵浠ユ帹鏂被鍨嬪垎鍒槸Func2(int (&)[10], int (&)[12])錛屽洜涓篿nt (&)[10] != int (&)[12]錛屾墍浠ヤ笌T == T鐩告?zhèn)栧Q佽嚜鐒朵篃灝辯紪璇戜笉榪囦簡錛?/p> <p>Func3錛?/p> <p>璇ュ嚱鏁版槸Func2鐨勪竴涓潤鎬佽〃紺猴紝閫氳繃涓婇潰鐨勮В閲婂簲璇ュ緢瀹規(guī)槗鐞嗚В榪欎釜浠g爜浜嗐?/p><img src ="http://m.shnenglu.com/mymsdn/aggbug/74333.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/mymsdn/" target="_blank">volnet</a> 2009-02-19 21:35 <a href="http://m.shnenglu.com/mymsdn/archive/2009/02/19/74333.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>C++ notes (6)http://m.shnenglu.com/mymsdn/archive/2009/02/15/cpp-notes-6.htmlvolnetvolnetSat, 14 Feb 2009 18:28:00 GMThttp://m.shnenglu.com/mymsdn/archive/2009/02/15/cpp-notes-6.htmlhttp://m.shnenglu.com/mymsdn/comments/73828.htmlhttp://m.shnenglu.com/mymsdn/archive/2009/02/15/cpp-notes-6.html#Feedback0http://m.shnenglu.com/mymsdn/comments/commentRss/73828.htmlhttp://m.shnenglu.com/mymsdn/services/trackbacks/73828.html

51銆乻tatic鎴愬憳鍑芥暟

鍥犱負static鎴愬憳涓嶆槸浠諱綍瀵硅薄鐨勭粍鎴愰儴鍒嗭紝鎵浠tatic鎴愬憳鍑芥暟涓嶈兘琚0鏄庝負const銆傛瘯绔燂紝灝嗘垚鍛樺嚱鏁板0鏄庝負const灝辨槸鎵胯涓嶄細淇敼璇ュ嚱鏁版墍灞炵殑瀵硅薄銆傛渶鍚庯紝static鎴愬憳鍑芥暟涔熶笉鑳借澹版槑涓鴻櫄鍑芥暟銆?/p>

52銆佺壒孌婄殑鏁村瀷const static鎴愬憳錛圥401錛?/p>

const static鏁版嵁鎴愬憳鍦ㄧ被鐨勫畾涔変綋涓垵濮嬪寲鏃訛紝璇ユ暟鎹垚鍛樹粛蹇呴』鍦ㄧ被鐨勫畾涔変綋涔嬪榪涜瀹氫箟銆?/p>

class Accout{

public:

static double rate() { return interestRate;}

static void rate(double); //sets a new rate

private:

static const int period = 30; //interest posted every 30 days

double daily_tbl[period]; // ok: period is constant expression

}

//definition of static member with no initializer;

//the initial value is specified inside the class definition

const int Accout::period;

浣嗗湪gcc鍜孧S vc++緙栬瘧鍣ㄤ笅浼間箮鍧囦笉闇瑕佸啀嬈″畾涔夛紝涔熷氨鏄璁劇殑“蹇呴』”浜屽瓧鍦ㄦ澶辨晥銆?/p>

53銆佹搷浣滅閲嶈澆錛圥435錛?/p>

涓嬮潰鏄竴浜涙寚瀵煎師鍒欙紝鏈夊姪浜庡喅瀹氬皢鎿嶄綔絎﹁緗負綾繪垚鍛樿繕鏄櫘閫氶潪鎴愬憳鍑芥暟

  • 璧嬪鹼紙=錛夈佷笅鏍囷紙[]錛夈佽皟鐢紙()錛夊拰鎴愬憳璁塊棶綆ご錛?>錛夌瓑鎿嶄綔絎﹀繀欏誨畾涔変負鎴愬憳錛屽皢榪欎簺鎿嶄綔絎﹀畾涔変負闈炴垚鍛樺嚱鏁板皢鍦ㄧ紪璇戞椂鏍囪涓洪敊璇?
  • 鍍忚祴鍊間竴鏍鳳紝澶嶅悎璧嬪兼搷浣滅閫氬父搴斿畾涔変負綾葷殑鎴愬憳銆備笌璧嬪間笉鍚岀殑鏄紝涓嶄竴瀹氶潪寰楄繖鏍峰仛錛屽鏋滃畾涔夐潪鎴愬憳澶嶅悎璧嬪兼搷浣滅錛屼笉浼氬嚭鐜扮紪璇戦敊璇?
  • 鏀瑰彉瀵硅薄鐘舵佹垨涓庣粰瀹氱被鍨嬬揣瀵嗚仈緋葷殑鍏朵粬涓浜涙搷浣滅錛屽鑷銆佽嚜鍑忓拰瑙e紩鐢紝閫氬父搴斿畾涔変負綾繪垚鍛樸?
  • 瀵圭О鐨勬搷浣滅錛屽綆楁湳鎿嶄綔絎︺佺浉絳夋搷浣滅銆佸叧緋繪搷浣滅鍜屼綅鎿嶄綔絎︼紝鏈濂藉畾涔変負鏅氶潪鎴愬憳鍑芥暟銆?/li>

54銆佸尯鍒搷浣滅鐨勫墠緙鍜屽悗緙褰㈠紡錛圥447錛?/p>

鍚屾椂瀹氫箟鍓嶇紑寮忔搷浣滅鍜屽悗緙寮忔搷浣滅瀛樺湪涓涓棶棰橈細瀹冧滑鐨勫艦鍙傛暟鐩拰綾誨瀷鐩稿悓錛屾櫘閫氶噸杞戒笉鑳藉尯鍒墍瀹氫箟鐨勬槸鍓嶇紑寮忔搷浣滅榪樻槸鍚庣紑寮忔搷浣滅銆?/p>

涓鴻В鍐寵繖涓闂錛屽悗緙寮忔搷浣滅鍑芥暟鎺ュ彈涓涓澶栫殑錛堝嵆錛屾棤鐢ㄧ殑錛塱nt鍨嬪艦鍙傘備嬌鐢ㄥ悗緙鎿嶄綔絎︽椂錛岀紪璇戝櫒鎻愪緵0浣滀負榪欎釜褰㈠弬鐨勫疄鍙傘傚敖綆℃垜浠殑鍓嶇紑寮忔搷浣滅鍑芥暟鍙互浣跨敤榪欎釜棰濆鐨勫艦鍙傦紝浣嗛氬父涓嶅簲璇ヨ繖鏍峰仛銆傞偅涓艦鍙備笉鏄悗緙寮忔搷浣滅鐨勬甯稿伐浣滄墍闇瑕佺殑錛屽畠鐨勫敮涓鐩殑鏄嬌鍚庣紑鍑芥暟涓庡墠緙鍑芥暟鍖哄埆寮鏉ャ?/p>

55銆佹樉寮忚皟鐢ㄥ墠緙寮忔搷浣滅

CheckedPtr parr(ia, ia+size); //ia points to an array of ints

parr.operator(0); //call postfix operator++

parr.operator(); //call prefix operator++

56銆佸嚱鏁板璞★紙P450錛?/p>

struct absInt {

int operator() (int val){

       return val<0 ? –val : val;

}

};

int i = –42;

absInt absObj; //object that defines function call operator

unsigned int ui = absObj(i); //calls absInt::operator(int)

灝界absObj鏄竴涓璞¤屼笉鏄嚱鏁幫紝鎴戜滑浠嶇劧鍙互“璋冪敤”璇ュ璞★紝鏁堟灉鏄繍琛岀敱absObj瀵硅薄瀹氫箟鐨勯噸杞借皟鐢ㄦ搷浣滅錛岃鎿嶄綔絎︽帴鍙椾竴涓猧nt鍊煎茍榪斿洖瀹冪殑緇濆鍊箋?/p>

鍑芥暟瀵硅薄緇忓父鐢ㄤ綔閫氱敤綆楁硶鐨勫疄鍙傘傦紙璇﹁P450錛?/p>

57銆佸嚱鏁板璞$殑鍑芥暟閫傞厤鍣紙P453錛?/p>

鏍囧噯搴撴彁渚涗簡涓緇勫嚱鏁伴傞厤鍣紙function adapter錛夛紝鐢ㄤ簬鐗瑰寲鍜屾墿灞曚竴鍏冨拰浜屽厓鍑芥暟瀵硅薄銆傚嚱鏁伴傞厤鍣ㄥ垎涓哄涓嬩袱綾伙細

錛?錛夌粦瀹氬櫒錛坆inder錛夛紝鏄竴縐嶅嚱鏁伴傞厤鍣紝瀹冮氳繃灝嗕竴涓搷浣滄暟緇戝畾鍒扮粰瀹氬艱屽皢浜屽厓鍑芥暟瀵硅薄杞崲涓轟竴鍏冨嚱鏁板璞°傦紙bind1st鍜?a >bind2nd 鏇村錛?/p>

錛?錛夋眰鍙嶅櫒錛坣egator錛夛紝鏄竴縐嶅嚱鏁伴傞厤鍣紝瀹冨皢璋撹瘝鍑芥暟瀵硅薄鐨勭湡鍊兼眰鍙嶃傦紙not1鍜?a target="_blank">not2 鏇村錛?/p>

58銆佽漿鎹㈡搷浣滅錛圥455錛?/p>

杞崲涓轟粈涔堟湁鐢紵錛堣瑙丳454錛?/p>

杞崲鍑芥暟閲囩敤濡備笅閫氱敤褰㈠紡錛?/p>

operator type();

榪欓噷錛宼ype琛ㄧず鍐呯疆綾誨瀷鍚嶃佺被綾誨瀷鍚嶆垨鐢辯被鍨嬪埆鍚嶆墍瀹氫箟鐨勫悕瀛椼傚浠諱綍鍙綔涓哄嚱鏁拌繑鍥炵被鍨嬬殑綾誨瀷錛堥櫎浜唙oid涔嬪錛夐兘鍙互瀹氫箟杞崲鍑芥暟銆備竴鑸岃█錛屼笉鍏佽杞崲涓烘暟緇勬垨鍑芥暟綾誨瀷錛岃漿鎹負鎸囬拡錛堟暟鎹垨鍑芥暟鎸囬拡錛変互鍙婂紩鐢ㄧ被鍨嬫槸鍙互鐨勩?/p>

杞崲鍑芥暟蹇呴』鏄垚鍛樺嚱鏁幫紝涓嶈兘鎸囧畾榪斿洖綾誨瀷錛屽茍涓斿艦鍙傝〃蹇呴』涓虹┖銆?/p>

杞崲鍑芥暟涓鑸笉搴旇鏀瑰彉琚漿鎹㈢殑瀵硅薄銆傚洜姝わ紝杞崲鎿嶄綔絎﹂氬父搴斿畾涔変負const鎴愬憳銆?/p>

59銆佸彧鑳藉簲鐢ㄤ竴涓被綾誨瀷杞崲

綾葷被鍨嬭漿鎹箣鍚庝笉鑳藉啀璺熷彟涓涓被綾誨瀷杞崲銆傚鏋滈渶瑕佸涓被綾誨瀷杞崲錛屽垯浠g爜灝嗗嚭閿欍?/p>

鍋囪鏈塈ntegral=>SmallInt=>int錛屼絾鏄鏋滄湁涓涓嚱鏁癱al(int)錛岄偅涔堝浜嶴mallInt si錛屽彲浠ヤ嬌鐢╟al(si)錛屼絾瀵逛簬Integral intVal;鍒欎笉鑳戒嬌鐢╟al(intVal)銆傝璦鍙厑璁鎬竴嬈$被綾誨瀷杞崲錛屾墍浠ヨ璋冪敤鍑洪敊銆?/p>

60銆乿irtual涓庡叾浠栨垚鍛樺嚱鏁幫紙P479錛?/p>

C++涓殑鍑芥暟璋冪敤榛樿涓嶄嬌鐢ㄥ姩鎬佺粦瀹氥傝瑙﹀彂鍔ㄦ佺粦瀹氾紝蹇呴』婊¤凍涓や釜鏉′歡錛氱涓錛屽彧鏈夋寚瀹氫負铏氬嚱鏁扮殑鎴愬憳鍑芥暟鎵嶈兘榪涜鍔ㄦ佺粦瀹氾紝鎴愬憳鍑芥暟榛樿涓洪潪铏氬嚱鏁幫紝闈炶櫄鍑芥暟涓嶈繘琛屽姩鎬佺粦瀹氾紱絎簩錛屽繀欏婚氳繃鍩虹被綾誨瀷鐨勫紩鐢ㄦ垨鎸囬拡榪涜鍑芥暟璋冪敤銆?/p>

鍩虹被綾誨瀷寮曠敤鍜屾寚閽堢殑鍏抽敭鐐瑰湪浜庨潤鎬佺被鍨嬶紙static type錛屽湪緙栬瘧鏃跺彲鐭ョ殑寮曠敤綾誨瀷鎴栨寚閽堢被鍨嬶級鍜屽姩鎬佺被鍨嬶紙dynamic type錛屾寚閽堟垨寮曠敤鎵緇戝畾鐨勫璞$殑綾誨瀷錛岃繖鏄粎鍦ㄨ繍琛屾椂鍙煡鐨勶級鍙兘涓嶅悓銆?/p>

volnet 2009-02-15 02:28 鍙戣〃璇勮
]]>
C++ notes (5)http://m.shnenglu.com/mymsdn/archive/2009/02/12/cpp-notes-5.htmlvolnetvolnetWed, 11 Feb 2009 17:06:00 GMThttp://m.shnenglu.com/mymsdn/archive/2009/02/12/cpp-notes-5.htmlhttp://m.shnenglu.com/mymsdn/comments/73512.htmlhttp://m.shnenglu.com/mymsdn/archive/2009/02/12/cpp-notes-5.html#Feedback0http://m.shnenglu.com/mymsdn/comments/commentRss/73512.htmlhttp://m.shnenglu.com/mymsdn/services/trackbacks/73512.html

41銆乿ector銆乴ist銆乨eque鐨勬ц兘鍒濈

int large_size = 10000000;

cout_current_time("start init vector!\t");
vector<string> svec1(large_size, "Hello");
vector<string> svec2(large_size, "Hi");
cout_current_time("end init vector!\t");

cout_current_time("start init list!\t");
list<string> slist1(large_size, "Hello");
list<string> slist2(large_size, "Hi");
cout_current_time("end init list!\t");

cout_current_time("start init deque!\t");
deque<string> sdeq1(large_size, "Hello");
deque<string> sdeq2(large_size, "Hi");
cout_current_time("end init deque!\t");

鐢ㄤ簨瀹炶璇濇渶鏈夎鏈嶅姏錛?/p>

start init vector!    current time : 5:5:52
end init vector!    current time : 5:5:55
start init list!    current time : 5:5:55
end init list!    current time : 5:6:14
start init deque!    current time : 5:6:14
end init deque!    current time : 5:6:26

鍙互鐪嬪嚭澶ц嚧鏃墮棿姣斾緥涓?/19/12銆傝櫧鐒朵笉瓚充互浣愯瘉瀹冧滑鐨勬ц兘宸窛錛屼絾vector鐨勫父鐢ㄤ技涔庢湁浜嗘洿鍏呭垎鐨勭悊鐢便?/p>

榪欓噷浣跨敤浜嗕竴涓畝鍗曠殑鏃墮棿鍑芥暟澶ц嚧濡備笅錛?/p>

#include <time.h>

typedef struct
tm * time_type; time_type get_current_time(void) { time_t t; t = time(NULL); return localtime(&t); }

42銆佸鍣ㄨ嚜澧為暱錛圥286錛?/p>

姣忕瀹炵幇閮借姹傞伒寰互涓嬪師鍒欙細紜繚push_back鎿嶄綔楂樻晥鍦板湪vector涓坊鍔犲厓绱犮備粠鎶鏈笂鏉ヨ錛屽湪鍘熸潵涓虹┖鐨剉ector瀹瑰櫒涓妌嬈¤皟鐢╬ush_back鍑芥暟錛屼粠鑰屽垱寤烘嫢鏈塶涓厓绱犵殑vector瀹瑰櫒錛屽叾鎵ц鏃墮棿姘歌繙涓嶈兘瓚呰繃n鐨勫父閲忓嶃?/p>

43銆佺被瀹氫箟涓負浣曚笉鑳藉叿鏈夎嚜韜殑鏁版嵁鎴愬憳錛圥375錛?/p>

鍥犱負鍙湁褰撶被瀹氫箟浣撳畬鎴愬悗鎵嶈兘瀹氫箟綾伙紝鍥犳綾諱笉鑳藉叿鏈夎嚜韜被鍨嬬殑鏁版嵁鎴愬憳銆傜劧鑰岋紝鍙綾誨悕涓鍑虹幇灝卞彲浠ヨ涓鴻綾誨凡澹版槑銆傚洜姝わ紝綾葷殑鏁版嵁鎴愬憳鍙互鏄寚鍚戣嚜韜被鍨嬬殑鎸囬拡鎴栧紩鐢細

class LinkScreen {

Screen window;

LinkScreen *next;

LinkScreen *prev;

};

44銆佷袱縐嶅紩鐢ㄧ被綾誨瀷鐨勬柟娉曪紙P376錛?/p>

Sales_item item1; //default initialized object of type Sales_item

class Sales_item item1; //equivalent definition of item1

涓ょ寮曠敤綾葷被鍨嬬殑鏂規(guī)硶鏄瓑浠風殑銆傜浜岀鏂規(guī)硶鏄粠C緇ф壙鑰屾潵鐨勶紝鍦–++涓粛鐒舵湁鏁堛傜涓縐嶆洿涓虹畝緇冿紝鐢盋++璇█寮曞叆錛屼嬌寰楃被綾誨瀷鏇村鏄撲嬌鐢ㄣ?/p>

45銆佷負浠涔堢被鐨勫畾涔変互鍒嗗彿緇撴潫錛圥376錛?/p>

鍒嗗彿鏄繀欏葷殑錛屽洜涓哄湪綾誨畾涔変箣鍚庡彲浠ユ帴涓涓璞″畾涔夊垪琛ㄣ傚畾涔夊繀欏諱互鍒嗗彿緇撴潫錛?/p>

class Sales_item {/* … */};

class Sales_item {/* … */} accum, trans;

46銆佸艦鍙傝〃鍜屽嚱鏁頒綋澶勪簬綾諱綔鐢ㄥ煙涓紝鍑芥暟榪斿洖綾誨瀷涓嶄竴瀹氬湪綾諱綔鐢ㄥ煙涓?/p>

鍦ㄥ畾涔変簬綾誨閮ㄧ殑鎴愬憳鍑芥暟涓紝褰㈠弬琛ㄥ拰鎴愬憳鍑芥暟浣撻兘鍑虹幇鍦ㄦ垚鍛樺悕涔嬪悗銆傝繖浜涢兘鏄湪綾諱綔鐢ㄥ煙涓畾涔夛紝鎵浠ュ彲浠ヤ笉鐢ㄩ檺瀹氳屽紩鐢ㄥ叾浠栨垚鍛樸傚洜涓哄艦鍙傝〃鏄湪Screen綾諱綔鐢ㄥ煙鍐咃紝鎵浠ヤ笉蹇呯煡鍚嶆垜浠兂瑕佺殑鏄疭creen::index銆?/p>

濡傛灉榪斿洖綾誨瀷浣跨敤鐢辯被瀹氫箟鐨勭被鍨嬶紝鍒欏繀欏諱嬌鐢ㄥ畬鍏ㄩ檺瀹氬悕銆?/p>

#include "stdafx.h"
#include <iostream>

class MyClass
{
public :
    typedef int index_t;
    index_t twice(index_t in);
};

MyClass::index_t MyClass ::twice(index_t in)
{
    return in * 2;
}

int _tmain(int argc, _TCHAR* argv[])
{
    using namespace std; 
    
    MyClass obj;
    MyClass::index_t x, y;
    
    x = 10;
    y = obj.twice(x);

    cout<<"x = "<<x<<"; y = "<<y<<";"<<endl;

    return 0;
}

47銆佹瀯閫犲嚱鏁板垵濮嬪寲寮忥紙P387錛?/p>

涓庝換鎰忕殑鎴愬憳鍑芥暟涓鏍鳳紝鏋勯犲嚱鏁板彲浠ュ畾涔夊湪綾葷殑鍐呴儴鎴栧閮ㄣ傛瀯閫犲嚱鏁板垵濮嬪寲寮忓彧鍦ㄦ瀯閫犲嚱鏁扮殑瀹氫箟涓屼笉鏄0鏄庝腑鎸囧畾銆?/p>

鏋勯犲嚱鏁板垵濮嬪寲鍒楄〃闅句互鐞嗚В鐨勪竴涓師鍥犲湪浜庯紝鐪佺暐鍒濆鍖栧垪琛ㄥ茍鍦ㄦ瀯閫犲嚱鏁扮殑鍑芥暟浣撳唴瀵規(guī)暟鎹垚鍛樿祴鍊兼槸鍚堟硶鐨勩?/p>

鍦ㄦ瀯閫犲嚱鏁板垵濮嬪寲鍒楄〃涓病鏈夋樉寮忔彁鍙婄殑姣忎釜鎴愬憳錛屼嬌鐢ㄤ笌鍒濆鍖栧彉閲忕浉鍚岀殑瑙勫垯鏉ヨ繘琛屽垵濮嬪寲銆傝繍琛岃綾誨瀷鐨勯粯璁ゆ瀯閫犲嚱鏁幫紝鏉ュ垵濮嬪寲綾葷被鍨嬬殑鏁版嵁鎴愬憳銆傚唴緗垨澶嶅悎綾誨瀷鐨勬垚鍛樼殑鍒濆鍊間緷璧栦簬瀵硅薄鐨勪綔鐢ㄥ煙錛氬湪灞閮ㄤ綔鐢ㄥ煙涓繖浜涙垚鍛樹笉琚垵濮嬪寲錛岃屽湪鍏ㄥ眬浣滅敤鍩熶腑瀹冧滑琚垵濮嬪寲涓?銆?/p>

濡傛灉閭d釜綾繪病鏈夐粯璁ゆ瀯閫犲嚱鏁幫紝鍒欑紪璇戝櫒灝濊瘯浣跨敤榛樿鏋勯犲嚱鏁板皢浼氬け璐ャ傚湪榪欑鎯呭喌涓嬶紝涓轟簡鍒濆鍖栨暟鎹垚鍛橈紝蹇呴』鎻愪緵鍒濆鍖栧紡銆?/p>

瀵逛簬榪欐牱鐨勬垚鍛橈紝鍦ㄦ瀯閫犲嚱鏁板嚱鏁頒綋涓瀹冧滑璧嬪間笉璧蜂綔鐢ㄣ傛病鏈夐粯璁ゆ瀯閫犲嚱鏁扮殑綾葷被鍨嬫垚鍛橈紝浠ュ強const鎴栧紩鐢ㄧ被鍨嬬殑鎴愬憳錛屼笉綆℃槸鍝綾誨瀷錛岄兘蹇呴』鍦ㄦ瀯閫犲嚱鏁板垵濮嬪寲鍒楄〃涓繘琛屽垵濮嬪寲銆?/p>

鍥犱負鍐呯疆綾誨瀷鐨勬垚鍛樹笉榪涜闅愬紡鍒濆鍖栵紝鎵浠ュ榪欎簺鎴愬憳鏄繘琛屽垵濮嬪寲榪樻槸璧嬪間技涔庨兘鏃犲叧绱ц銆傞櫎浜嗕袱涓緥澶栵紝瀵歸潪綾葷被鍨嬬殑鏁版嵁鎴愬憳榪涜璧嬪兼垨浣跨敤鍒濆鍖栧紡鍦ㄧ粨鏋滃拰鎬ц兘涓婇兘鏄瓑浠風殑銆?/p>

48銆佹垚鍛樺垵濮嬪寲鐨勬搴?/p>

鏋勯犲嚱鏁板垵濮嬪寲鍒楄〃浠呮寚瀹氱敤浜庡垵濮嬪寲鎴愬憳鐨勫鹼紝騫朵笉鎸囧畾榪欎簺鍒濆鍖栨墽琛岀殑嬈″簭銆傛垚鍛樿鍒濆鍖栫殑嬈″簭灝辨槸瀹氫箟鎴愬憳鐨勬搴忋?/p>

class X{

int i;

int j;

public:

//run-time error: i is initialized before j

X(int val): j(val), i(j) {}

}

鍦ㄨ繖縐嶆儏鍐典笅錛屾瀯閫犲嚱鏁板垵濮嬪寲鍒楄〃鐪嬭搗鏉ヤ技涔庢槸鐢╲al鍒濆鍖杍錛岀劧鍚庡啀鐢╦鏉ュ垵濮嬪寲i銆傜劧鑰宨棣栧厛琚垵濮嬪寲銆傝繖涓垵濮嬪寲鍒楄〃鐨勬晥鏋滄槸鐢ㄥ皻鏈垵濮嬪寲鐨刯鍊兼潵鍒濆鍖杋錛?/p>

49銆佷嬌鐢ㄩ粯璁ゆ瀯閫犲嚱鏁幫紙P393錛?/p>

甯哥姱鐨勪竴涓敊璇槸閲囩敤浠ヤ笅鏂瑰紡澹版槑涓涓敤榛樿鏋勯犲嚱鏁板垵濮嬪寲鐨勫璞★細

Sales_item myobj();

Sales_item myobj(); //ok: but defines a function, not an object

if(myobj.same_isbn(Primer_3rd_ed)) // error: myobj is a function

姝g‘鐨勬柟寮忓簲璇ユ槸鍘繪帀鐩稿簲鐨勬嫭鍙鳳細

Sales_item myobj;

鎴栬?/p>

Sales_item myobj = Sales_item();

50銆佹樉寮忔垨闅愬紡鍒濆鍖?/p>

#include "stdafx.h"
#include <iostream>
using namespace std; 
class MyClass
{
public :
    typedef int index_t;
    bool same_object(MyClass obj);

public :
    MyClass(int default_index = 5)
        :default_index(default_index),
        m_name("default_name"){}
    MyClass::MyClass(std::string name);

public :
    int default_index;
    std::string m_name;
};

MyClass::MyClass(std::string name)
        :default_index(0), m_name(name){}

bool MyClass::same_object(MyClass obj)
{
    cout<<"m_name = "<<m_name.c_str()<<endl;
    cout<<"obj.m_name = "<<obj.m_name.c_str()<<endl;
    return strcmp(obj.m_name.c_str(), m_name.c_str()) == 0;
}

int _tmain(int argc, _TCHAR* argv[])
{    
    MyClass obj;

    cout<<"explicit : "<<obj.same_object(MyClass("default_name"))<<endl;
    cout<<"implicit : "<<obj.same_object(string("default_name"))<<endl;

    return 0;
}

鍥犱負鍏鋒湁浠td::string涓哄艦鍙傜殑鏋勯犲嚱鏁幫紝鍥犳鍦ㄨ皟鐢ㄩ渶瑕丮yClass瀵硅薄鐨剆ame_object鎴愬憳鍑芥暟鏃訛紝浼氳嚜鍔ㄩ殣寮忚皟鐢ㄨ鏋勯犲嚱鏁版瀯寤篗yClass瀵硅薄錛岀敤浜庢搷浣溿備絾鐢熸垚鐨凪yClass瀵硅薄鏄復鏃跺璞★紝鍦╯ame_object鍑芥暟璋冪敤瀹屾垚鍚庨攢姣併傚鏋滀負浜嗛伩鍏嶄駭鐢熼殣寮忚漿鎹㈠彲浠ヤ嬌鐢╡xplicit鍏抽敭瀛楁潵鎶戝埗鐢辨瀯閫犲嚱鏁板畾涔夌殑闅愬紡杞崲錛?/p>

explicit



volnet 2009-02-12 01:06 鍙戣〃璇勮
]]>
C++ notes (4)http://m.shnenglu.com/mymsdn/archive/2009/02/05/cpp-notes-4.htmlvolnetvolnetWed, 04 Feb 2009 19:48:00 GMThttp://m.shnenglu.com/mymsdn/archive/2009/02/05/cpp-notes-4.htmlhttp://m.shnenglu.com/mymsdn/comments/73033.htmlhttp://m.shnenglu.com/mymsdn/archive/2009/02/05/cpp-notes-4.html#Feedback5http://m.shnenglu.com/mymsdn/comments/commentRss/73033.htmlhttp://m.shnenglu.com/mymsdn/services/trackbacks/73033.html

31銆佸姩鎬佺┖闂寸殑閲婃斁錛圥119錛?/p>

鍔ㄦ佺┖闂寸殑閲婃斁浣跨敤delete [] pia;錛堝叾涓璸ia涓烘寚鍚戝姩鎬佸垎閰嶇殑鏁扮粍鐨勭涓涓厓绱犵殑鎸囬拡錛夈傚湪鍏抽敭瀛梔elete鍜屾寚閽堜箣闂寸殑鏂規(guī)嫭鍙峰鏄繀涓嶅彲灝戠殑錛氬畠鍛婅瘔緙栬瘧鍣ㄨ鎸囬拡鎸囧悜鐨勬槸鑷敱瀛樺偍鍖轟腑鐨勬暟緇勶紝鑰屽茍闈炲崟涓璞°?/p>

濡傛灉閬楁紡浜嗙┖鏂規(guī)嫭鍙峰錛岃繖鏄竴涓紪璇戝櫒鏃犳硶鍙戠幇鐨勯敊璇紝灝嗗鑷寸▼搴忓湪榪愯鏃跺嚭閿欍?/p>

浣跨敤std::string鍚庡垯浼氳嚜鍔ㄨ繘琛岄噴鏀撅紝鏃犻渶delete錛?/p>

32銆乧_str榪斿洖鐨勬暟緇勫茍涓嶄繚璇佷竴瀹氭槸鏈夋晥鐨勨︹?/p>

std::string st1("I am a string object!");
//error C2440: 鈥滃垵濮嬪寲鈥? 鏃犳硶浠庘渃onst char *鈥濊漿鎹負鈥渃har *鈥?
//char *str = st1.c_str();
const char *cstr = st1.c_str();
std::cout<<cstr<<std::endl;

c_str榪斿洖鐨勬暟緇勫茍涓嶄繚璇佷竴瀹氭槸鏈夋晥鐨勶紝鎺ヤ笅鏉ュst1鐨勬搷浣滄湁鍙兘浼氭敼鍙榮t1鐨勫鹼紝浣垮垰鎵嶈繑鍥炵殑鏁扮粍澶辨晥銆傚紼嬪簭闇瑕佹寔緇闂鏁版嵁錛屽垯搴旇澶嶅埗c_str鍑芥暟榪斿洖鐨勬暟緇勩?/p>

33銆佹寚鍚戝嚱鏁扮殑鎸囬拡

璇﹁銆?a href="http://m.shnenglu.com/mymsdn/archive/2009/02/01/pointer-to-function.html">鎸囧悜鍑芥暟鐨勬寚閽堢殑涓鐐圭悊瑙?/a>銆?/p>

34銆佸鍣ㄥ垵濮嬪寲

鍦ㄥぇ澶氭暟鐨勭▼搴忎腑錛屼嬌鐢ㄩ粯璁ゆ瀯閫犲嚱鏁拌兘杈懼埌鏈浣寵繍琛屾椂鎬ц兘錛屽茍涓斾嬌瀹瑰櫒鏇村鏄撲嬌鐢ㄣ?/p>

35銆佸鍣ㄥご鏂囦歡

#include <vector>

#include <list>

#include <deque> //鍙岀闃熷垪鈥渄ouble-ended queue鈥濓紝鍙戦煶涓衡渄eck鈥?/p>

鏍囧噯搴撳畾涔変簡浠ヤ笂涓夌欏哄簭瀹瑰櫒綾誨瀷銆?/p>

36銆佸鍣ㄧ殑瀹瑰櫒

蹇呴』鐢ㄧ┖鏍奸殧寮涓や釜鐩擱偦鐨?gt;絎﹀彿錛屼互紺鴻繖鏄袱涓垎寮鐨勭鍙鳳紝鍚﹀垯錛岀郴緇熶細璁や負>>鏄崟涓鍙鳳紝涓哄彸縐繪搷浣滅錛屽茍瀵艱嚧緙栬瘧鏃墮敊璇?/p>

int m, n;
m = 5;
n = 3;

cout << "Print a line!" << endl;
vector<string> lines(n, " I_am_a_PC_! ");
for (vector<string>::iterator siter = lines.begin(); siter != lines.end(); ++siter) {
    cout << *siter;
}
cout << endl;

cout << "Print a paragraph!" << endl;
vector<vector<string> > paragraph(m, lines);
for (vector<vector<string> >::iterator piter = paragraph.begin(); piter
        != paragraph.end(); ++piter) {
    for (vector<string>::iterator siter = (*piter).begin(); siter
            != (*piter).end(); ++siter) {
        cout << *siter << ends;
    }
    cout << endl;
}

37銆佽凱浠e櫒鑼冨洿錛圥269錛?/p>

C++瀹氫箟鐨勫鍣ㄧ被鍨嬩腑錛屽彧鏈塿ector鍜宒eque瀹瑰櫒鎻愪緵涓嬮潰涓ょ閲嶈鐨勮繍綆楅泦鍚堬細榪唬鍣ㄧ畻鏈繍綆楋紝浠ュ強浣跨敤闄や簡==鍜?=涔嬪鐨勫叧緋繪搷浣滅鏉ユ瘮杈冧袱涓凱浠e櫒錛?=鍜?=榪欎袱縐嶅叧緋昏繍綆楅傜敤浜庢墍鏈夊鍣級銆?/p>

list瀹瑰櫒鐨勮凱浠e櫒鏃笉鏀寔綆楁湳榪愮畻錛堝噺娉曟垨鍔犳硶錛夛紝涔熶笉鏀寔鍏崇郴榪愮畻錛?lt;=,<,>=,>錛夊畠鍙彁渚涘墠緗拰鍚庣疆鐨勮嚜澧炪佽嚜鍑忎互鍙婄浉鍚岋紙涓嶇瓑錛夎繍綆椼?/p>

38銆佸鍣ㄥ厓绱犻兘鏄壇鏈?/p>

鍦ㄥ鍣ㄤ腑娣誨姞鍏冪礌鏃訛紝緋葷粺鏄皢鍏冪礌鍊煎鍒跺埌瀹瑰櫒閲岀殑銆傜被浼煎湴錛屼嬌鐢ㄤ竴孌靛厓绱犲垵濮嬪寲鏂板鍣ㄦ椂錛屾柊瀹瑰櫒瀛樻斁鐨勬槸鍘熷鍏冪礌鐨勫壇鏈傝澶嶅埗鐨勫師濮嬪間笌鏂板鍣ㄤ腑鐨勫厓绱犲悇涓嶇浉鍏籌紝姝ゅ悗瀹瑰櫒鍐呭厓绱犲煎彂鐢熷彉鍖栨椂錛岃澶嶅埗鐨勫師鍊間笉浼氬彈鍒板獎鍝嶏紝鍙嶄箣浜︾劧銆?/p>

39銆佷笅鏍囨搷浣滃拰.at(n)鐨勫尯鍒?/p>

vector<string> svec; //empty vector;

cout << svec[0]; //run-time error:There are no elements in svec!

cout << svec.at(0); //throws out_of_range exception

40銆佸鍣ㄧ殑璧嬪鹼紙P283錛?/p>

assign鎿嶄綔棣栧厛鍒犻櫎瀹瑰櫒涓墍鏈夌殑鍏冪礌錛岀劧鍚庡皢鍏跺弬鏁版墍鎸囧畾鐨勬柊鍏冪礌鎻掑叆鍒拌瀹瑰櫒涓備笌澶嶅埗瀹瑰櫒鍏冪礌鐨勬瀯閫犲嚱鏁頒竴鏍鳳紝濡傛灉涓や釜瀹瑰櫒綾誨瀷鐩稿悓錛屽叾鍏冪礌綾誨瀷涔熺浉鍚岋紝灝卞彲浠ヤ嬌鐢ㄨ祴鍊兼搷浣滅錛?錛夊皢涓涓鍣ㄨ祴鍊肩粰鍙︿竴涓鍣ㄣ傚鏋滃湪涓嶅悓錛堟垨鐩稿悓錛夌被鍨嬬殑瀹瑰櫒鍐咃紝鍏冪礌綾誨瀷涓嶇浉鍚屼絾鏄浉浜掑吋瀹癸紝鍒欏叾璧嬪艱繍綆楀繀欏諱嬌鐢╝ssign鍑芥暟銆備緥濡傦紝鍙氳繃assign鎿嶄綔瀹炵幇灝唙ector瀹瑰櫒涓竴孌礳har*綾誨瀷鐨勫厓绱犺祴緇檚tring綾誨瀷鐨刲ist瀹瑰櫒銆?/p>

鐢變簬assign鎿嶄綔棣栧厛鍒犻櫎瀹瑰櫒涓師鏉ュ瓨鍌ㄧ殑鎵鏈夊厓绱狅紝鍥犳錛屼紶閫掔粰assign鍑芥暟鐨勮凱浠e櫒涓嶈兘鎸囧悜璋冪敤璇ュ嚱鏁扮殑瀹瑰櫒鍐呯殑鍏冪礌銆?/p>

volnet 2009-02-05 03:48 鍙戣〃璇勮
]]>
C++ notes (3)http://m.shnenglu.com/mymsdn/archive/2008/12/25/cpp-notes-3.htmlvolnetvolnetThu, 25 Dec 2008 08:13:00 GMThttp://m.shnenglu.com/mymsdn/archive/2008/12/25/cpp-notes-3.htmlhttp://m.shnenglu.com/mymsdn/comments/70336.htmlhttp://m.shnenglu.com/mymsdn/archive/2008/12/25/cpp-notes-3.html#Feedback5http://m.shnenglu.com/mymsdn/comments/commentRss/70336.htmlhttp://m.shnenglu.com/mymsdn/services/trackbacks/70336.html

21銆乿ector鐨勫姩鎬佸闀夸紭浜庨鍏堝垎閰嶅唴瀛樸?/p>

浣跨敤vector鐨勬椂鍊欐渶濂藉姩鎬佸湴娣誨姞鍏冪礌銆傚畠涓嶅悓浜嶤鍜孞ava鎴栧叾浠栬璦鐨勬暟鎹被鍨嬶紝涓轟簡杈懼埌榪炵畫鎬э紝鏇存湁鏁堢殑鏂規(guī)硶鏄厛鍒濆鍖栦竴涓┖vector瀵硅薄錛岀劧鍚庡啀鍔ㄦ佹坊鍔犲厓绱狅紝鑰屼笉鏄鍏堝垎閰嶅唴瀛樸?/p>

22銆乿ector鍊煎垵濮嬪寲

鍐呯疆->0

鏈夐粯璁ゆ瀯閫?>璋冪敤榛樿鏋勯?/p>

鏃犻粯璁ゆ瀯閫狅紝鏈夊叾浠栨瀯閫?>紼嬪簭鍛樻墜鍔ㄦ彁渚涘垵濮嬪?/p>

鏃犻粯璁ゆ瀯閫狅紝涔熸棤鍏朵粬鏋勯?>鏍囧噯搴撲駭鐢熶竴涓甫鍒濆肩殑瀵硅薄

23銆佹暟緇勪笅鏍囩殑綾誨瀷

C++涓紝鏁扮粍涓嬫爣鐨勬紜被鍨嬫槸size_t鑰屼笉鏄痠nt錛宻ize_t鏄竴涓笌鏈哄櫒鐩稿叧鐨剈nsigned綾誨瀷銆?/p>

24銆佸湪澹版槑鎸囬拡鐨勬椂鍊欙紝鍙互鐢ㄧ┖鏍煎皢絎﹀彿*涓庡叾鍚庣殑鏍囪瘑絎﹀垎闅斿紑鏉ワ紝string *ps涓巗tring* ps閮芥槸鍙互鐨勶紝浣嗗悗鑰呭鏄撲駭鐢熻瑙o紝濡傦細

string* ps1,ps2;     //ps1鏄寚閽堬紝鑰宲s2鏄竴涓猻tring瀵硅薄

涔熷氨鏄錛屼漢浠彲鑳借鎶妔tring鍜宻tring*褰撲綔涓や釜綾誨瀷錛屾垨鑰呰string*琚綋浣滀竴縐嶆柊綾誨瀷鏉ョ湅寰咃紝浣嗚繖鏄敊鐨?/u>錛?/p>

25銆佷竴涓湁鏁堢殑鎸囬拡蹇呯劧鏄互涓嬩笁縐嶇姸鎬佷箣涓錛?/p>

  1. 淇濆瓨鐗瑰畾鐨勫璞$殑鍦板潃錛?
  2. 鎸囧悜鏌愪釜瀵硅薄鍚庨潰鐨勫彟涓瀵硅薄錛?
  3. 鎴栬呮槸0鍊箋傝〃鏄庡畠涓嶆寚鍚戜換浣曞璞°?/li>

鍏朵腑int *pi=0;涓巌nt *pi;鏄笉鍚岀殑銆傚墠鑰呮槸鍒濆鍖栨寚閽堟寚鍚?鍦板潃鐨勫璞★紙鍗充負NULL錛夛紙pi initialized to address to no object錛夛紝鍚庤呭嵈鏄湭鍒濆鍖栫殑錛坥k, but dangerous, pi is uninitialized錛夈?/p>

緙栬瘧鍣ㄥ彲浠ユ嫻嬪嚭0鍊肩殑鎸囬拡錛岀▼搴忓彲鍒ゆ柇璇ユ寚閽堝茍鏈寚鍚戜竴涓璞★紝鑰屾湭鍒濆鍖栫殑鎸囬拡鐨勪嬌鐢ㄦ爣鍑嗗茍鏈畾涔夛紝瀵瑰ぇ澶氭暟緙栬瘧鍣ㄦ潵璇達紝濡傛灉浣跨敤鏈垵濮嬪寲鐨勬寚閽堜細灝嗘寚閽堜腑瀛樻斁鐨勪笉紜畾鍊艱涓哄湴鍧錛岀劧鍚庢搷綰佃鍐呭瓨鍦板潃涓瓨鏀劇殑浣嶅唴瀹癸紝浣跨敤鏈垵濮嬪寲鐨勬寚閽堢浉褰撲簬鎿嶇旱榪欎釜涓嶇‘瀹氱殑鍦板潃涓瓨鍌ㄧ殑鍩虹鏁版嵁錛屽洜姝ゅ鏈垵濮嬪寲鐨勬寚閽堣繘琛岃В寮曠敤鏃訛紝閫氬父浼氬鑷寸▼搴忓穿婧冦?/p>

26銆乿oid*鎸囬拡

void*鎸囬拡鍙敮鎸佸嚑縐嶆湁闄愮殑鎿嶄綔錛?/p>

  1. 涓庡彟涓涓寚閽堣繘琛屾瘮杈冿紱
  2. 鍚戝嚱鏁頒紶閫抳oid*鎸囬拡鎴栦粠鍑芥暟榪斿洖void*鎸囬拡錛?
  3. 緇欏彟涓涓獀oid*鎸囬拡璧嬪箋?/li>

涓嶅厑璁鎬嬌鐢╲oid*鎸囬拡鎿嶇旱瀹冩墍鎸囧悜鐨勫璞°?/p>

27銆佹寚閽堝拰寮曠敤鐨勬瘮杈冿紙P105錛?/p>

铏界劧浣跨敤寮曠敤錛坮eference錛夊拰鎸囬拡閮藉彲闂存帴璁塊棶鍙︿竴涓鹼紝浣嗗畠浠箣闂存湁涓や釜閲嶈鍖哄埆銆傜涓涓尯鍒湪浜庡紩鐢ㄦ繪槸鎸囧悜鏌愪釜瀵硅薄錛氬畾涔夊紩鐢ㄦ椂娌℃湁鍒濆鍖栨槸閿欒鐨勩傜浜屼釜閲嶈鍖哄埆鍒欐槸璧嬪艱涓虹殑宸紓錛氱粰寮曠敤璧嬪間慨鏀圭殑鏄寮曠敤鎵鍏寵仈鐨勫璞$殑鍊鹼紝鑰屽茍涓嶆槸浣垮紩鐢ㄤ笌鍙︿竴涓璞″叧鑱斻傚紩鐢ㄤ竴緇忓垵濮嬪寲錛屽氨濮嬬粓鎸囧悜鍚屼竴涓壒瀹氬璞★紙榪欏氨鏄負浠涔堝紩鐢ㄥ繀欏誨湪瀹氫箟鏃跺垵濮嬪寲鐨勫師鍥狅級銆?/p>

28銆佹寚閽堜笌typedef錛圥112錛?/p>

const鏀懼湪綾誨瀷鍓嶅拰鏀懼湪綾誨瀷鍚庨兘鍙互琛ㄧず鍚屾牱鐨勬剰鎬濓細

const string s1;
string const s2;

s1鍜宻2鍧囪〃紺哄父閲忓瓧絎︿覆瀵硅薄銆?/p>

浣嗗洜姝ゅ氨瀵艱嚧浜嗕笅闈㈢殑鍙ュ瓙鍙兘浜х敓璇В錛?/p>

typedef string *pstring;
const pstring cstr;

瀹規(guī)槗閿欐妸typedef褰撴垚鏂囨湰鎵╁睍鑰屼駭鐢熶笅闈㈢殑鐞嗚В錛?/p>

const string *cstr; //榪欏茍闈炰笂闈緥瀛愮殑姝g‘鎰忔濓紒錛堥敊璇級

搴旇浠庡0鏄庣殑鍙ュ瓙鐪嬶紝涔熷氨鏄鍙湅const pstring cstr;錛屽湪榪欓噷pstring鏄竴縐嶆寚閽堢被鍨嬶紝const淇グ鐨勬槸榪欎釜綾誨瀷錛屽洜姝ゆ紜殑鐞嗚В搴旇鏄細

string *const cstr;

鑰宑onst pstring cstr;鍏跺疄鍙互琛ㄧず涓簆string const cstr;錛岃繖鏍風殑鍐欐硶鍒欎笉瀹規(guī)槗浜х敓璇В銆備粠鍙沖悜宸﹂槄璇葷殑鎰忔濆氨鏄細cstr鏄痗onst pstring綾誨瀷錛屽嵆鎸囧悜string瀵硅薄鐨刢onst鎸囬拡銆?/p>

29銆佸垱寤哄姩鎬佹暟緇勶紙娉ㄦ剰鐐硅浠g爜娉ㄩ噴錛?/p>

const char *cp1 = "some value";
char *cp2 = "other value";

int *piArray1 = new int[10];    //鍐呯疆綾誨瀷娌℃湁鍒濆鍖?
int *piArray2 = new int[10]();    //鍐呯疆綾誨瀷闇瑕佸姞絀哄渾鎷彿錛屽鏁扮粍鍏冪礌榪涜鍒濆鍖?
std::string *psArray1 = new std::string[10];    //榛樿鏋勯犲嚱鏁板垵濮嬪寲

std::cout<<"----------"<<std::endl
    <<"*cp1\t\t:"<<*cp1<<std::endl
    <<"*cp2\t\t:"<<*cp2<<std::endl
    <<"*piArray1\t:"<<*piArray1<<std::endl
    <<"*piArray2\t:"<<*piArray2<<std::endl
    <<"*psArray1\t:"<<*psArray1<<std::endl
    <<"----------"<<std::endl;

浣嗘槸涓嬮潰鐨勭粨鏋滃嵈涓庢蹇典笂鐨勪笉鍚岋細

////Visual Studio & MS VC++
//----------                   
//*cp1            :s
//*cp2            :o
//*piArray1       :-842150451
//*piArray2       :0
//*psArray1       :
//----------
////Eclipse&G++
//----------
//*cp1        :s
//*cp2        :o
//*piArray1    :4064608
//*piArray2    :4064560
//*psArray1    :
//----------

鐪嬫潵涓嶅悓鐨勭紪璇戝櫒瀵規(guī)鐨勫畾涔夎繕鏄湁鎵涓嶅悓錛屾敞鎰忕湅*piArray2鐨勫鹼紝鎸夌収璇存槑搴旇鏄垵濮嬪寲涓?錛屼絾榪欓噷鍗翠粛鐒惰〃鐜板嚭涓?piArray1涓鏍風殑鍊鹼紝璇存槑騫舵病鏈夊彂鐢熷垵濮嬪寲銆?/p>

瀵逛簬鍔ㄦ佸垎閰嶇殑鏁扮粍錛屽叾鍏冪礌鍙兘鍒濆鍖栦負鍏冪礌綾誨瀷鐨勯粯璁ゅ鹼紝鑰屼笉鑳藉儚鏁扮粍鍙橀噺涓鏍鳳紝鐢ㄥ垵濮嬪寲鍒楄〃涓烘暟緇勫厓绱犳彁渚涘悇涓嶇浉鍚岀殑鍒濆箋?/p>

30銆乧onst瀵硅薄鐨勫姩鎬佹暟緇?/p>

//P118
//error:uninitialized const array
const int *pciArray1 = new const int[10];
//ok:value-initialized const array
const int *pciArray2 = new const int[10]();
std::cout<<*pciArray1<<std::endl;
std::cout<<*pciArray2<<std::endl;

涓婇潰鐨勭ず渚嬬殑娉ㄩ噴鏉ヨ嚜涔︿腑錛屼絾鍦╒C++緙栬瘧鍣ㄥ拰G++緙栬瘧鍣ㄤ笅鍗翠笉鍚岋紝鍏蜂綋琛ㄧ幇涓猴細

  • VC++錛氱紪璇戞紜紝絎竴鍙ヨ緭鍑洪殢鏈哄湴鍧鐨勫鹼紝絎簩鍙ヨ緭鍑哄垵濮嬪寲鐨?錛堝叾涓寜鐓р滄爣鍑嗏濈涓縐嶅洜涓烘湭鍚慶onst鍙橀噺鍒濆鍖栵紝搴旇鏃犳硶閫氳繃緙栬瘧錛屼絾榪欓噷鍙互錛?/li>
  • G++錛氱紪璇戦敊璇紝絎竴鍙ョ殑閿欒淇℃伅涓衡渦ninitialized const in `new' of `const int'鈥濓紝浣嗙浜屽彞鎸夌収鏍囧噯搴旇杈撳嚭0鐨勶紝榪欓噷鍗磋緭鍑轟簡闅忔満鍦板潃鐨勫箋?/li>

鐪嬫潵涓や釜緙栬瘧鍣ㄥ榪欎竴闂鐨勭湅娉曚笉澶竴鑷淬?/p>

volnet 2008-12-25 16:13 鍙戣〃璇勮
]]>
C++ notes (2)http://m.shnenglu.com/mymsdn/archive/2008/12/20/cpp-notes-2.htmlvolnetvolnetSat, 20 Dec 2008 07:50:00 GMThttp://m.shnenglu.com/mymsdn/archive/2008/12/20/cpp-notes-2.htmlhttp://m.shnenglu.com/mymsdn/comments/69907.htmlhttp://m.shnenglu.com/mymsdn/archive/2008/12/20/cpp-notes-2.html#Feedback0http://m.shnenglu.com/mymsdn/comments/commentRss/69907.htmlhttp://m.shnenglu.com/mymsdn/services/trackbacks/69907.html

11銆佹灇涓?/p>

//enum     
enum HttpVerbs { Head, Post, Get, Delete };
   
HttpVerbs current_verbs = Post;    
std::cout<<"Current Verbs = "<<current_verbs<<std::endl;
    










//error C2440: 鈥?鈥? 鏃犳硶浠庘渋nt鈥濊漿鎹負鈥淗ttpVerbs鈥?/span>    
//current_verbs = 3;
    

current_verbs = (HttpVerbs)2;    
std::cout<<"Current Verbs = "<<current_verbs<<std::endl;
    
HttpVerbs copy_verbs = current_verbs;    
std::cout<<"Copy Verbs = "<<copy_verbs<<std::endl;
    
HttpVerbs future_verbs = (HttpVerbs)((current_verbs + 1)%sizeof(HttpVerbs));    
std::cout<<"Future Verbs = "<<future_verbs<<std::endl;
    
std::cout<<"HttpVerbs Size![by sizeof(HttpVerbs)] = "<<sizeof(HttpVerbs)<<std::endl;

杈撳嚭錛?/p>

Current Verbs = 1
Current Verbs = 2
Copy Verbs = 2
Future Verbs = 3
HttpVerbs Size![by sizeof(HttpVerbs)] = 4

12銆佺被錛屾垚鍛樺彉閲忓垵濮嬪寲

瀹氫箟鍙橀噺鍜屽畾涔夋暟鎹垚鍛樺瓨鍦ㄧ潃闈炲父閲嶈鐨勫尯鍒細涓鑸笉鑳芥妸綾繪垚鍛樼殑鍒濆鍖栦綔涓哄叾瀹氫箟鐨勪竴閮ㄥ垎銆傚綋瀹氫箟鏁版嵁鎴愬憳鏃訛紝鍙兘鎸囧畾璇ユ暟鎹垚鍛樼殑鍚嶅瓧鍜岀被鍨嬨傜被涓嶆槸鍦ㄧ被瀹氫箟閲屽畾涔夋暟鎹垚鍛樻椂鍒濆鍖栨暟鎹垚鍛橈紝鑰屾槸閫氳繃鎴愪負鏋勯犲嚱鏁扮殑鐗規(guī)畩鎴愬憳鍑芥暟鎺у埗鍒濆鍖栥?/p>

class MyClass1
{
public:
int GetMyValue();
     void SetMyValue(int value); private:
     //error C2864: 鈥淢yClass1::myValue鈥? 鍙湁闈欐佸父閲忔暣鍨嬫暟鎹垚鍛樻墠鍙互鍦ㄧ被涓垵濮嬪寲
     int myValue = 3; //鍙渶淇敼涓篿nt myValue;鍗沖彲 };

13銆乻truct鍏抽敭瀛?/p>

C++鏀寔鍙︿竴涓叧閿瓧struct錛屽畠涔熷彲浠ュ畾涔夌被綾誨瀷銆俿truct鍏抽敭瀛楁槸浠嶤璇█涓戶鎵胯繃鏉ョ殑銆?/p>

濡傛灉浣跨敤class鍏抽敭瀛楁潵瀹氫箟綾伙紝閭d箞瀹氫箟鍦ㄧ涓涓闂爣鍙峰墠鐨勪換浣曟垚鍛橀兘闅愬紡鎸囧畾涓簆rivate錛涘鏋滀嬌鐢╯truct鍏抽敭瀛楋紝閭d箞榪欎簺鎴愬憳閮芥槸public錛岄櫎闈炴湁鍏朵粬鐗規(guī)畩鐨勫0鏄庯紝濡傛坊鍔犱簡private鎵嶄負private錛屽惁鍒欓兘鏄痯ublic錛屽洜姝ゆ病蹇呰娣誨姞public鍏抽敭瀛椼?/p>

鐢╟lass鍜宻truct鍏抽敭瀛楀畾涔夌被鐨勫敮涓宸埆鍦ㄤ簬榛樿璁塊棶綰у埆錛氶粯璁ゆ儏鍐典笅錛宻truct鐨勬垚鍛樹負public錛岃宑lass鐨勬垚鍛樹負private銆?/p>

14銆侀緙栬瘧澶存枃浠?/p>

涓銆?u>浠涔堟槸棰勭紪璇戝ご鏂囦歡?
棰勭紪璇戝ご鏂囦歡鐗╃悊涓婁笌閫氬父鐨勭殑.obj鏂囦歡鏄竴鏍風殑錛屼絾緙栬瘧鍏ラ緙栬瘧澶寸殑.h,.c,.cpp鏂囦歡鍦ㄦ暣涓紪璇戣繃紼嬩腑錛屽彧緙栬瘧涓嬈★紝濡傞緙栬瘧澶存墍娑夊強鐨勯儴鍒嗕笉鍙戠敓鏀瑰彉鐨勮瘽錛屽湪闅忓悗鐨勭紪璇戣繃紼嬩腑姝ら儴鍒嗕笉閲嶆柊榪涜緙栬瘧銆傝繘鑰屽ぇ澶ф彁楂樼紪璇戦熷害錛屽茍渚夸簬瀵瑰ご鏂囦歡榪涜綆$悊錛屼篃鏈夊姪浜庢潨緇濋噸澶嶅寘鍚棶棰樸?/p>

VC++紼嬪簭涓鑸寘鍚殑澶存枃浠墮兘姣旇緝澶嶆潅錛屽鏋滄瘡嬈¢兘閫愯鍒嗘瀽鍙兘浼氳姳寰堝鏃墮棿錛屾墍浠C++榛樿璁劇疆鏄涓嬈$紪璇戞椂鍒嗘瀽鎵鏈夊ご鏂囦歡錛岀敓鎴?pch鏂囦歡錛岃繖涓枃浠跺緢澶э紝浣嗕互鍚庢瘡嬈$紪璇戞椂灝卞彲浠ヨ妭鐪佸緢澶氭椂闂淬傚鏋滃垹闄や簡榪欎釜鏂囦歡錛屼笅嬈$紪璇戞椂VC++浼氳嚜鍔ㄧ敓鎴愬畠銆?/p>

浜屻?u>浠涔堟椂鍊欎嬌鐢ㄩ緙栬瘧澶?
褰撳ぇ澶?c鎴?cpp鏂囦歡閮介渶瑕佺浉鍚岀殑澶存枃浠舵椂銆?
褰撴煇浜涗唬鐮佽澶ч噺閲嶅浣跨敤鏃躲?
褰撳鍏ユ煇浜涗笉鍚屽簱閮芥湁瀹炵幇鐨勫嚱鏁幫紝騫朵駭鐢熸販涔辨椂銆?/p>

15 銆佸湪澶存枃浠朵腑蹇呴』鎬繪槸浣跨敤瀹屽叏闄愬畾鐨勬爣鍑嗗簱鍚嶅瓧銆?/p>

鍥犱負棰勫鐞嗗櫒浼氬皢澶存枃浠跺鍒跺埌浣跨敤瀹冪殑浠諱綍鍦版柟錛屼袱縐嶅彲鑳斤紝涓縐嶆槸濡傛灉鍦ㄥご鏂囦歡涓嬌鐢╱sing錛屼細浣跨浉鍏充唬鐮佷笉璁烘槸鍚﹂渶瑕佽using閮藉繀灝嗘斁緗竴涓猽sing錛屽彟涓縐嶆槸錛屽亣璁炬湁鍙︿竴涓簱鍙兘涔熷寘鍚簡鐩稿簲鐨勬柟娉曞鏈夋柟娉晄td::cout浠ュ強my::cout錛屽鏋滀嬌鐢ㄤ簡using錛屾湁鍙兘瀵艱嚧琚紩鍏ョ殑紼嬪簭鍋忕鍘熸湰鐨勪嬌鐢ㄦ剰鍥撅紝鎴栬呭鑷寸紪璇戦敊璇?/p>

16銆佸瓧絎︿覆瀛楅潰鍊煎拰鏍囧噯搴搒tring涓嶆槸鍚屼竴縐嶇被鍨?/p>

鍥犱負鍘嗗彶鍘熷洜浠ュ強涓轟簡涓嶤璇█鍏煎錛屽瓧絎︿覆瀛楅潰鍊間笌鏍囧噯搴搒tring綾誨瀷涓嶆槸鍚屼竴縐嶇被鍨嬨傝繖涓鐐瑰緢瀹規(guī)槗寮曡搗娣蜂貢錛岀紪紼嬫椂涓瀹氳娉ㄦ剰鍖哄垎瀛楃涓插瓧闈㈠煎拰string鏁版嵁綾誨瀷鐨勪嬌鐢紝榪欏緢閲嶈銆?/p>

17銆乬etline鍑芥暟杈撳叆鐨勬椂鍊欎涪寮冩湯灝劇殑鎹㈣絎︼紝騫跺皢鏁磋榪斿洖錛岃屼笖涓嶄涪寮冪涓涓崲琛岀錛屼篃灝辨槸鍗充究浣犱竴寮濮嬪氨杈撳叆浜嗘崲琛岀錛屽畠浠嶇劧浼氳繑鍥烇紝鍙笉榪囪繑鍥炵殑鏄竴涓┖瀛楃涓茶屽凡銆?/p>

緙栧啓紼嬪簭瀹炵幇浠庢爣鍑嗚緭鍏ユ瘡嬈¤鍙栦竴琛屾枃鏈傜劧鍚庢敼鍐欑▼搴忥紝姣忔璇誨叆涓涓崟璇?

//std::cout<<"getline錛?lt;<std::endl;
WriteLine("getLine");
WriteLine("P72 緙?/span>);
using std::string;

WriteLine("姣?杈?NEXT\"榪?);
string str;
while(std::getline(std::cin, str))
{
    if(str == "NEXT")
        break;
    std::cout<<str<<std::endl;
}

WriteLine("姣忚緭"NEXT\"榪?);
while(std::getline(std::cin, str))
{
    if(str == "NEXT")
        break;
    //浠庣0涓紑濮嬫煡鎵劇┖鐧?/span>
static const std::basic_string<char>::size_type npos = (std::basic_string<char>::size_type)-1; std::basic_string<char>::size_type firstIndexOfEmpty = str.find_first_of(" ", 0); if(firstIndexOfEmpty != npos) std::cout<<str.substr(0, firstIndexOfEmpty)<<std::endl; else std::cout<<str<<endl; }

鍏朵腑WriteLine鍑芥暟錛?/p>

void WriteLine(std::string str)
{
    std::cout<<str<<std::endl;
}

18銆乻td::string瀵硅薄鐨勫姞娉?/p>

濡傛灉涓涓插瓧絎︿覆鍜宻tring瀵硅薄娣峰悎鐩稿姞錛屽垯瑕佹眰+鎿嶄綔絎﹀乏鍙蟲搷浣滄暟蹇呴』鑷沖皯鏈変竴涓槸string綾誨瀷鐨勩?/p>

鎺ㄨ錛氫竴涓插瓧絎︿覆鍜宻tring瀵硅薄娣峰悎鐩稿姞錛屽墠涓や釜鎿嶄綔鏁頒腑鑷沖皯鏈変竴涓槸string瀵硅薄銆?/p>

std::string str2 = str1 + "this" + " that" + " those";
std::cout << str2 << std::endl;
//error C2110: 鈥?鈥? 涓嶈兘娣誨姞涓や釜鎸囬拡
std::string str3 = "this" + " that" + str1 + " those"; std::cout << str3 << std::endl;

19銆丆鏍囧噯搴撳ご鏂囦歡鍜孋++鐗堟湰

C++鏍囧噯搴撲篃鍖呮嫭C鏍囧噯搴擄紝鍛藉悕涓婂垯鍦–鏍囧噯搴撶殑鍚嶅瓧鍓嶅姞涓涓猚騫剁渷鍘誨悗緙.h錛屾瘮濡侰鏍囧噯搴撲腑鐨刢type.h錛屽湪C++涓氨鏈夌浉搴旂殑鏍囧噯搴揷ctype錛堟敞鎰忔病鏈?h錛夈侰++鍜孋鏍囧噯搴撴枃浠剁殑鍐呭鏄竴鏍風殑錛屽彧鏄噰鐢ㄤ簡鏇撮傚悎C++鐨勫艦寮忋傝屼笖閫氬父cname澶存枃浠朵腑瀹氫箟鐨勫悕瀛楅兘瀹氫箟鍦ㄥ懡鍚嶇┖闂磗td鍐咃紝鑰?h鐗堟湰鐨勫悕瀛楀嵈涓嶆槸榪欐牱銆?/p>

20銆佸叧浜庝腑鏂囩紪鐮佺殑鐩稿叧闂

鎴戜滑鐭ラ亾澶ч儴鍒嗙殑緙栬瘧鍣ㄤ互鍙婅В鍐蟲柟妗堥兘鐢卞鍥戒漢鍙戞槑鍒涢狅紝鐗瑰埆鏄編鍥戒漢銆傚洜姝ゅ緢澶氱▼搴忛粯璁や笉鏀寔涓枃銆傝櫧鐒墮殢鐫Unicode鐨勬櫘鍙婅繖閮ㄥ垎闂寰楀埌浜嗗緢澶х殑鏀瑰杽錛堟瘮濡侰#灝卞彲浠ュ畬緹庡湴鏀寔涓枃錛夛紝浣嗘槸綾諱技C++榪欐牱鐨勮璦錛屼粛鐒墮潰涓寸潃涓枃緙栫爜鐨勯棶棰樸傚叧浜庣紪鐮侊紝鏈変竴綃囧煎緱鎺ㄨ崘鐨勬枃绔狅細鍦板潃1錛?a target="_blank" >澶囩敤鍦板潃錛?a target="_blank" >涓嬭澆鍚庢墦鍗?/a>錛坉ocx錛?0.7KB錛?a target="_blank" >鏌ユ壘鏇村



volnet 2008-12-20 15:50 鍙戣〃璇勮
]]>C++ notes (1)http://m.shnenglu.com/mymsdn/archive/2008/12/19/cpp-notes-1.htmlvolnetvolnetFri, 19 Dec 2008 09:52:00 GMThttp://m.shnenglu.com/mymsdn/archive/2008/12/19/cpp-notes-1.htmlhttp://m.shnenglu.com/mymsdn/comments/69853.htmlhttp://m.shnenglu.com/mymsdn/archive/2008/12/19/cpp-notes-1.html#Feedback6http://m.shnenglu.com/mymsdn/comments/commentRss/69853.htmlhttp://m.shnenglu.com/mymsdn/services/trackbacks/69853.html 1銆佹爣璇嗙鍛藉悕瑙勫垯錛?

鏍囪瘑絎︿笉鑳藉寘鍚袱涓繛緇殑涓嬪垝綰匡紝涔熶笉鑳戒互涓嬪垝綰垮紑澶村悗闈㈢揣璺熶竴涓ぇ鍐欏瓧姣嶃傛湁浜涙爣璇嗙錛堝湪鍑芥暟澶栧畾涔夌殑鏍囪瘑絎︼級涓嶈兘浠ヤ笅鍒掔嚎寮澶淬?/p>

浣嗘槸鍦℅++緙栬瘧鍣ㄥ拰VC緙栬瘧鍣ㄤ笅錛屼簩鑰呭潎鍙紜紪璇戯紒

Eclipse&G++Visual studio 2008

2銆佽法騫沖彴緙栬瘧紼嬪簭錛?/p>

榪欓噷涓嶆槸瑕佽瑙e浣曡法騫沖彴緙栬瘧紼嬪簭錛屼篃涓嶆槸鍛婅瘔浣犲浣曟洿濂藉湴緙栧啓閫氱敤騫沖彴鐨勭▼搴忚鍒欙紝閭e彲鑳芥秹鍙婂埌寰堝鐨勫畯瀹氫箟浠ュ強紜歡鐩稿叧鐗規(guī)с傝繖閲屼粎涓轟嬌鐢ㄧず渚嬩唬鐮佹彁渚涗竴縐嶇簿綆鐨勬柟寮忋?/p>

鐢‥clipse+MinGW鐨勬柟寮忛粯璁や細寰堢簿綆錛屾墍浠ユ妸瀹冨綋浣滀竴縐嶇洰鏍囷紒

鐢╒isual Studio 2008鍒涘緩鐨勭▼搴忎細璁╀綘寮曞叆棰勭紪璇戝ごstdafx.h錛堣繖閫氬父鍙戠敓鍦ㄤ嬌鐢╒isual Studio鍒涘緩Win32鎺у埗鍙板簲鐢ㄧ▼搴忥紝騫剁洿鎺ョ偣鍑?#8220;瀹屾垚”鍚庯級錛岃繖灝嗗鑷翠綘鏃犳硶灝嗗湪Eclipse涓婄紪鍐欑殑紼嬪簭鐩存帴榪愯鍦╒isual Studio涓娿傝繖鏃朵綘搴旇閫氳繃淇敼欏圭洰灞炴ф潵鑾峰緱榪欑綺劇畝鐨勬柟寮忥細錛堥夋嫨欏圭洰錛屽彸閿睘鎬э紝閫夋嫨閰嶇疆灞炴?>C/C++->棰勭紪璇戝ご->鍒涘緩/浣跨敤棰勭紪璇戝ご錛岄夋嫨“涓嶄嬌鐢ㄩ緙栬瘧澶?#8221;->“紜畾”鍚庡啀嬈$紪璇戝嵆鍙紒錛?/p>

properties

3銆佸彉閲忓懡鍚嶄範棰?/p>

//嫻嬭瘯鍙橀噺鍛藉悕錛?
//error C2632: “int”鍚庨潰鐨?#8220;double”闈炴硶
//int double = 3.14159;
//-------------------------------------------------
char _='a';
std::cout<<_<<std::endl;
//-------------------------------------------------
//warning C4091: “”: 娌℃湁澹版槑鍙橀噺鏃跺拷鐣?#8220;bool”鐨勫乏渚?
//error C2059: 璇硶閿欒: “-”
//bool catch-22;
//-------------------------------------------------
//error C2059: 璇硶閿欒: “鏁板瓧涓婄殑閿欒鍚庣紑”
//char 1_or_2 = '1';
//-------------------------------------------------
float Float=3.14f;
std::cout<<Float<<std::endl;

4銆佸湪C++涓紝“鍒濆鍖栦笉鏄祴鍊?#8221;

鍒濆鍖栨寚鍒涘緩鍙橀噺騫剁粰瀹冭祴鍒濆鍊鹼紝鑰岃祴鍊煎垯鏄摝闄ゅ璞$殑褰撳墠鍊煎茍鐢ㄦ柊鍊間唬鏇褲?/p>

int ival(1024); //鐩存帴鍒濆鍖?/span>
int ival = 1024; //澶嶅埗鍒濆鍖?/span>

鐩存帴鍒濆鍖栬娉曟洿鐏墊椿錛屾晥鐜囨洿楂橈紒

瀵瑰唴緗被鍨嬫潵璇達紝澶嶅埗鍒濆鍖栧拰鐩存帴鍒濆鍖栧嚑涔庢病鏈夊樊鍒?/p>

瀵圭被綾誨瀷鏉ヨ錛屾湁浜涘垵濮嬪寲浠呰兘鐢ㄧ洿鎺ュ垵濮嬪寲瀹屾垚銆傝鎯崇悊瑙e叾涓紭鐢憋紝闇瑕佸垵姝ヤ簡瑙g被鏄浣曟帶鍒跺垵濮嬪寲鐨勩?/p>

渚嬪錛?/p>

涔熷彲浠ラ氳繃涓涓鏁板櫒鍜屼竴涓瓧絎﹀垵濮嬪寲string瀵硅薄銆傝繖鏍峰垱寤虹殑瀵硅薄鍖呭惈閲嶅澶氭鐨勬寚瀹氬瓧絎︼紝閲嶅嬈℃暟鐢辮鏁板櫒鎸囧畾錛?/p>

std::string all_nines(10, ‘9’); //all_nines = “9999999999”;

鏈緥涓紝鍒濆鍖朼ll_nines鐨勫敮涓鏂規(guī)硶鏄洿鎺ュ垵濮嬪寲銆傛湁澶氫釜鍒濆鍖栧紡鏃朵笉鑳戒嬌鐢ㄥ鍒跺垵濮嬪寲銆傦紙V娉細榪欓噷鐨勫垵濮嬪寲寮忓嵆涓烘瀯閫犲嚱鏁扮殑澶氫釜閲嶈澆錛涜繖閲屾墍璋撶殑“涓嶈兘浣跨敤”搴旇鏄?#8220;鍔熻兘鏈夋墍涓嶅強”鐨勬剰鎬濓紒錛?/p>

5銆佸彉閲忓垵濮嬪寲瑙勫垯

浣跨敤鏈垵濮嬪寲鐨勫彉閲忕粡甯稿鑷撮敊璇紝鑰屼笖鍗佸垎闅愯斀銆傞棶棰樺嚭鍦ㄦ湭鍒濆鍖栫殑鍙橀噺浜嬪疄涓婇兘鏈変竴涓箋傜紪璇戝櫒鎶婅鍙橀噺鏀懼埌鍐呭瓨涓殑鏌愪釜浣嶇疆錛岃屾妸榪欎釜浣嶇疆鐨勬棤璁哄摢縐嶄綅妯″紡閮藉綋鎴愭槸鍙橀噺鍒濆鐨勭姸鎬併傚綋琚В閲婃垚鏁村瀷鍊兼椂錛屼換浣曚綅妯″紡閮芥槸鍚堟硶鐨勫尖斺旇櫧鐒惰繖涓間笉鍙兘鏄▼搴忓憳鎯寵鐨勩傚洜涓鴻繖涓煎悎娉曪紝鎵浠ヤ嬌鐢ㄥ畠涔熶笉鍙兘瀵艱嚧紼嬪簭宕╂簝銆傚彲鑳界殑緇撴灉鏄鑷寸▼搴忛敊璇墽琛屽拰/鎴栭敊璇綆椼?/p>

//鍦‥clipse涓繍琛屾病鏈夊嚭鐜伴敊璇紒
//鍦╒isual Studio涓繍琛屽嚭鐜拌繍琛屾椂閿欒錛?/span>
int ival;    //娌℃湁鍒濆鍖栵紒
std::cout<<ival<<std::endl;

6銆佸0鏄庡拰瀹氫箟

涓轟簡鑳借澶氫釜鏂囦歡璁塊棶鐩稿悓鐨勫彉閲忥紝C++鍖哄垎浜嗗0鏄庡拰瀹氫箟銆傜畝鍗曞湴璇村氨鏄彲浠ョ敤extern鍏抽敭瀛楁潵澹版槑錛屼換浣曟湁鍒嗛厤鍐呭瓨琛屼負鐨勫0鏄庨兘鏄畾涔夈傚畾涔変篃鏄0鏄庛傚0鏄庯細鏍囨槑鍙橀噺鐨勭被鍨嬪拰鍚嶅瓧錛涘畾涔夛細涓哄彉閲忓垎閰嶅瓨鍌ㄧ┖闂達紝榪樺彲浠ヤ負鍙橀噺鎸囧畾鍒濆鍊箋?/p>

涓句緥璇存槑錛?/p>

extern double pi; //澹版槑
double pi; //瀹氫箟錛屽0鏄庝簡pi鍚屾椂瀹氫箟浜唒i
extern double pi = 3.14159; //瀹氫箟錛屽洜涓哄畠涓簆i鍒嗛厤浜嗗垵鍊箋傚彧鏈夊綋璇xtern璇彞
     浣嶄簬鍑芥暟澶栭儴鐨勬椂鍊欐墠鍏佽浣跨敤鍒濆鍖栧紡錛屽惁鍒欏皢瀵艱嚧緙栬瘧閿欒銆?/span>

7銆佸彉閲忕殑闅愯棌錛?/p>

std::string s1 = "I am a std::string!";
std::cout<<s1<<std::endl;
for(int s1=3; s1!=0; --s1)
std::cout<<"I am a number(int):"<<s1<<std::endl;

鎻愮ず錛氬湪Visual Studio 2008涓嬌鐢╯td::string瀹氫箟涓涓彉閲忥紝鍐嶉氳繃std::cout灝嗗叾杈撳嚭錛屽皢浼氬緱鍒?#8220;error C2679: 浜岃繘鍒?#8220;<<”: 娌℃湁鎵懼埌鎺ュ彈“std::string”綾誨瀷鐨勫彸鎿嶄綔鏁扮殑榪愮畻絎?鎴栨病鏈夊彲鎺ュ彈鐨勮漿鎹?”閿欒淇℃伅錛岃繖鏃惰媯鏌ュご鏂囦歡涓槸鍚﹀寘鍚?include <string>銆傝屽湪Eclipse涓垯涓嶇敤濡傛璁劇疆錛堝叿浣撶湅緙栬瘧鍣ㄧ増鏈級銆傝繖涓庢爣鍑嗗簱瀹炵幇鐨勫叿浣撶粏鑺傛湁鍏籌紝鍦∕SVC涓紝瀹冨湪鏂囦歡Program Files (x86)\Microsoft Visual Studio 9.0\VC\include\string涓瀹炵幇錛屽湪GNU涓紝瀹冨湪base_string.h涓瀹炵幇銆傚湪浣跨敤std::string鏃訛紝鎬繪槸鍖呭惈#include <string>鏄竴涓ソ涔犳儻錛?/p>

8銆乧onst瀵硅薄榛樿涓烘枃浠剁殑灞閮ㄥ彉閲?/p>

涓鑸0鏄庡彉閲忓悗鍙互鍦ㄥ叾瀹冩枃浠朵腑閫氳繃extern鍏抽敭瀛楀0鏄庡茍浣跨敤璇ュ彉閲忥細

//鏂囦歡1錛?/span>
int counter;
//鏂囦歡2錛?/span>
extern int counter;
++counter;

浣嗘槸濡傛灉鏄痗onst鍒欐棤娉曡闂傚彲浠ラ氳繃鏄懼紡鎸囧畾extern鍏抽敭瀛椾嬌鍏舵垚涓哄叏灞鍙闂璞★細

//鏂囦歡1錛?/span>
extern const int bufSize = getBufSize();
//鏂囦歡2錛?/span>
extern count int bufSize;
//……浣跨敤bufSize

娉ㄨВ錛氶潪const鍙橀噺榛樿涓篹xtern銆傝浣縞onst鍙橀噺鑳藉鍦ㄥ叾浠栫殑鏂囦歡涓闂紝蹇呴』鏄懼紡鍦版寚瀹氬畠涓篹xtern銆?/p>

9銆佸紩鐢?/p>

int ival = 1024;
int &refVal = ival;

褰撳紩鐢ㄥ垵濮嬪寲鍚庯紝鍙璇ュ紩鐢ㄥ瓨鍦紝灝變繚鎸佺粦瀹氬埌鍒濆鍖栨椂鎸囧悜鐨勫璞°備笉鍙兘灝嗗紩鐢ㄧ粦瀹氬埌鍙︿竴涓璞°?/p>

涔熸鍥犱負濡傛錛屾墍浠ュ紩鐢ㄦ瘮鎸囬拡鐨勪紭鍔垮氨鍦ㄤ簬錛氬紩鐢ㄤ笉鍙互鍦ㄦ柟娉曚腑綃℃敼錛岃繖浣垮緱鏂規(guī)硶鍙橀噺鍙樺緱瀹夊叏浜嗐?/p>

10銆乧onst寮曠敤

const int ival = 1024;
const int &refVal = ival;

榪欓噷鎴戜滑瑕佹眰宸︿晶鐨勭被鍨嬫槸涓鑷寸殑錛屽寘鎷琧onst錛?/p>

闈瀋onst寮曠敤鍙兘緇戝畾鍒頒笌璇ュ紩鐢ㄥ悓綾誨瀷鐨勫璞°?br>const寮曠敤鍒欏彲浠ョ粦瀹氬埌涓嶅悓浣嗙浉鍏崇殑綾誨瀷鐨勫璞℃垨緇戝畾鍒板彸鍊箋傦紙鍏蜂綋紺轟緥璇﹁C++Primer v4 P52錛?/p>

渚嬪錛?/p>

//閿欒浠g爜
double dval = 3.14;
const int &ri = dval;

緙栬瘧鍣ㄤ細灝嗚繖浜涗唬鐮佽漿鎹㈡垚濡備互涓嬪艦寮忕殑緙栫爜錛?/p>

int temp = dval;
const int &ri = temp;
濡傛灉ri涓嶆槸const錛岄偅涔堝彲浠ョ粰ri璧嬩竴鏂板箋傝繖鏍峰仛涓嶄細淇敼dval錛岃屾槸淇敼浜唗emp銆傛湡鏈涘ri鐨勮祴鍊間細淇敼dval鐨勭▼搴忓憳浼氬彂鐜癲val騫舵病鏈夎淇敼銆備粎鍏佽const寮曠敤緇戝畾鍒伴渶瑕佷復鏃朵嬌鐢ㄧ殑鍊煎畬鍏ㄩ伩鍏嶄簡榪欎釜闂錛屽洜涓篶onst寮曠敤鏄彧璇葷殑銆?br> 

浣嗘槸濡備笅浠g爜鍙互鎵ц錛?/p>

int ival = 1024;
const int &refVal = ival;
++ival;
//++refVal;    //error C3892: “refVal” 涓嶈兘緇欏父閲忚祴鍊?
std::cout<<"ival="<<ival<<"\trefVal="<<refVal<<std::endl;

杈撳嚭錛歩val=1025    refVal=1025

const double dval = 3.14;
const int &ri = (int)dval;
std::cout<<ri<<std::endl;
杈撳嚭錛?

volnet 2008-12-19 17:52 鍙戣〃璇勮
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[瀛︿範絎旇]C++ Primer[絎簩绔燷鍩烘湰璇█http://m.shnenglu.com/mymsdn/archive/2007/06/16/26420.htmlvolnetvolnetFri, 15 Jun 2007 17:32:00 GMThttp://m.shnenglu.com/mymsdn/archive/2007/06/16/26420.htmlhttp://m.shnenglu.com/mymsdn/comments/26420.htmlhttp://m.shnenglu.com/mymsdn/archive/2007/06/16/26420.html#Feedback2http://m.shnenglu.com/mymsdn/comments/commentRss/26420.htmlhttp://m.shnenglu.com/mymsdn/services/trackbacks/26420.html Page 30 ( Chapter 2 鍩烘湰璇█) 綆楁湳綾誨瀷鐨勫瓨鍌ㄧ┖闂翠緷鏈哄櫒鑰屽畾銆?/td>
Page 30 ( Chapter 2 鍩烘湰璇█)
琛ㄧず鏁存暟銆佸瓧絎﹀拰甯冨皵鍊肩殑綆楁湳綾誨瀷鍚堢О涓?strong>鏁村艦(integral type)
瀛楃綾誨瀷鏈変袱縐嶏細char鍜寃char_t銆俢har綾誨瀷閫氬父鏄崟涓満鍣ㄥ瓧鑺?byte)銆倃char_t綾誨瀷鐢ㄤ簬鎵╁睍瀛楃闆嗭紝姣斿姹夊瓧鍜屾棩璇?/td>
Page 31 ( Chapter 2 鍩烘湰璇█)
鍦ㄤ綅榪欎竴綰т笂錛屽瓨鍌ㄥ櫒鏄病鏈夌粨鏋勫拰鎰忎箟鐨勩?br>璁╁瓨鍌ㄥ叿鏈夌粨鏋勭殑鏈鍩烘湰鏂規(guī)硶鏄敤鍧楋紙chunk錛夊鐞嗗瓨鍌ㄣ傗︹﹁櫧鐒剁‘鍒囩殑澶у皬鍥犳満鍣ㄤ笉鍚岃屼笉鍚岋紝浣嗘槸閫氬父灝?浣嶇殑鍧椾綔涓轟竴涓瓧鑺傦紝32浣嶆垨4涓瓧鑺備綔涓轟竴涓滃瓧錛坵ord錛夆?/td>
Page 32 ( Chapter 2 鍩烘湰璇█)
C++鏍囧噯騫舵湭瀹氫箟signed綾誨瀷濡備綍鐢ㄤ綅鏉ヨ〃紺猴紝鑰屾槸鐢辨瘡涓紪璇戝櫒鑷敱鍐沖畾濡備綍琛ㄧずsigned綾誨瀷銆傗︹︾鍙蜂綅涓?錛屽煎氨涓鴻礋鏁幫紱絎﹀彿浣嶄負0錛屽煎氨涓?鎴栨鏁般傗︹︽湁浜涜璦涓皢璐熸暟璧嬬粰unsigned綾誨瀷鏄潪娉曠殑錛屼絾鍦–++涓繖鏄悎娉曠殑銆?/td>
Page 35 ( Chapter 2 鍩烘湰璇█)
涓轟簡鍏煎C璇█錛孋++涓墍鏈夌殑瀛楃涓插瓧闈㈠奸兘鐢辯紪璇戝櫒鑷姩鍦ㄦ湯灝炬坊鍔犱竴涓┖瀛楃銆?/td>
Page 36 ( Chapter 2 鍩烘湰璇█)
涓や釜鐩擱偦鐨勪粎鐢辯┖鏍箋佸埗琛ㄧ鎴栨崲琛岀鍒嗗紑鐨勫瓧絎︿覆瀛楅潰鍊鹼紙鎴栧瀛楃涓插瓧闈㈠鹼級錛屽彲榪炴帴鎴愪竴涓柊瀛楃涓插瓧闈㈠箋?br>//concatenated long string literal
std::cout<<"a multi-line "
"string literal "
"using concatenation "
<<std::endl;
鎵ц榪欐潯璇彞灝嗕細杈撳嚭錛?br>a multi-line string literal using concatenation
濡傛灉榪炴帴瀛楃涓插瓧闈㈠煎拰瀹藉瓧絎︿覆瀛楅潰鍊鹼紝灝嗕細鍑虹幇浠涔堢粨鏋滃憿錛熶緥濡傦細
//Concatenating plain and wide character strings is undefined
std::cout<<"multi-line" L"literal "<<std::endl;
鍏剁粨鏋滄湭瀹氫箟鐨勶紙unsigned錛夛紝涔熷氨鏄錛岃繛鎺ヤ笉鍚岀被鍨嬬殑琛屼負鏍囧噯娌℃湁瀹氫箟銆傝繖涓▼搴忓彲鑳戒細鎵ц錛屼篃鍙兘浼氬穿婧冩垨鑰呬駭鐢熸病鏈夌敤鐨勫鹼紝鑰屼笖鍦ㄤ笉鍚岀殑緙栬瘧鍣ㄤ笅紼嬪簭鐨勫姩浣滃彲鑳戒笉鍚屻?/td>
Page 36 ( Chapter 2 鍩烘湰璇█)
鍦ㄤ竴琛岀殑鏈熬鍔犱竴鍙嶆枩綰跨鍙峰彲灝嗘琛屽拰涓嬩竴琛屽綋浣滃悓涓琛屽鐞嗐?br>std::cou\
t<<"Hi"<<st\
d::endl;
絳変環(huán)浜?br>std::cout<<"Hi"<<std::endl;
娉ㄦ剰鍙嶆枩綰跨鍙峰繀欏繪槸璇ヨ鐨勫熬瀛楃鈥斺斾笉鍏佽鍏跺悗闈㈡湁娉ㄩ噴鎴栫┖鏍箋傚悓鏍鳳紝鍚庣戶琛岃棣栫殑浠諱綍絀烘牸鍜屽埗琛ㄧ閮芥槸瀛楃涓插瓧闈㈠肩殑涓閮ㄥ垎銆傛鍥犲姝わ紝闀垮瓧絎︿覆瀛楅潰鍊肩殑鍚庣戶琛屾墠涓嶄細鏈夋甯哥殑緙╄繘銆?/td>
Page 39 ( Chapter 2 鍩烘湰璇█)
C++鏄竴闂ㄩ潤鎬佺被鍨嬭璦錛屽湪緙栬瘧鏃朵細浣滅被鍨嬫鏌ャ?/td>
Page 41 ( Chapter 2 鍩烘湰璇█)
鏍囪瘑絎︿笉鑳藉寘鍚袱涓繛緇殑涓嬪垝綰匡紝涔熶笉鑳戒互涓嬪垝綰垮紑澶村悗闈㈢揣璺熶竴涓ぇ鍐欏瓧姣嶃傛湁浜涙爣璇嗙錛堝湪鍑芥暟澶栧畾涔夌殑鏍囪瘑絎︼級涓嶈兘浠ヤ笅鍒掔嚎寮澶淬?/td>
Page 42 ( Chapter 2 鍩烘湰璇█)
C++鏀寔涓ょ鍒濆鍖栧彉閲忕殑褰㈠紡錛氬鍒跺垵濮嬪寲錛坈opy-initialization錛夊拰鐩存帴鍒濆鍖栵紙direct-initialization錛夈傚鍒跺垵濮嬪寲璇硶鐢ㄧ瓑鍙鳳紙=錛夛紝鐩存帴鍒濆鍖栧垯鏄妸鍒濆鍖栧紡鏀懼湪鎷彿涓細
int ival(1024);    //direct-initialization
int ival = 1024;    //copy-initialization
Page 43 ( Chapter 2 鍩烘湰璇█)
涔熷彲浠ラ氳繃涓涓鏁板櫒鍜屼竴涓瓧絎﹀垵濮嬪寲string瀵硅薄銆傝繖鏍峰垱寤虹殑瀵硅薄鍖呭惈閲嶅澶氭鐨勬寚瀹氬瓧絎︼紝閲嶅嬈℃暟鐢辮鏁板櫒鎸囧畾錛?br>std::string all_nines(10,'9');    //all_nines="9999999999"
鏈緥涓紝鍒濆鍖朼ll_nines鐨勫敮涓鏂規(guī)硶鏄洿鎺ュ垵濮嬪寲銆傛湁澶氫釜鍒濆鍖栧紡鏃朵笉鑳戒嬌鐢ㄥ鍒跺垵濮嬪寲
Page 44 ( Chapter 2 鍩烘湰璇█)
鍐呯疆綾誨瀷鍙橀噺鏄惁鑷姩鍒濆鍖栧彇鍐充簬鍙橀噺瀹氫箟鐨勪綅緗傚湪鍑芥暟浣撳瀹氫箟鐨勫彉閲忛兘鍒濆鍖栨垚0錛屽湪鍑芥暟浣撻噷瀹氫箟鐨勫唴緗被鍨嬪彉閲忎笉榪涜鑷姩鍒濆鍖栥?/td>
Page 46 ( Chapter 2 鍩烘湰璇█)
extern澹版槑涓嶆槸瀹氫箟錛屼篃涓嶅垎閰嶅瓨鍌ㄧ┖闂淬?br>鈥︹?br>鍙湁褰揺xtern澹版槑浣嶄簬鍑芥暟澶栭儴鏃訛紝鎵嶅彲浠ュ惈鏈夊垵濮嬪寲寮忋?/td>
Page 50 ( Chapter 2 鍩烘湰璇█)
闈瀋onst鍙橀噺榛樿涓篹xtern錛岃浣縞onst鍙橀噺鑳藉鍦ㄥ叾浠栫殑鏂囦歡涓闂紝蹇呴』鏄懼紡鍦版寚瀹氬畠涓篹xtern
Page 51 ( Chapter 2 鍩烘湰璇█)
寮曠敤鍙槸瀵硅薄鐨勫彟涓涓悕瀛?/td>
Page 52 ( Chapter 2 鍩烘湰璇█)
const寮曠敤鍙互鍒濆鍖栦負涓嶅悓綾誨瀷鐨勫璞℃垨鑰呭垵濮嬪寲涓哄彸鍊?br>鈥︹?br>闈瀋onst寮曠敤鍙兘緇戝畾鍒頒笌璇ュ紩鐢ㄥ悓綾誨瀷鐨勫璞°?br>const寮曠敤鍒欏彲浠ョ粦瀹氬埌涓嶅悓浣嗙浉鍏崇殑綾誨瀷鐨勫璞℃垨緇戝畾鍒板彸鍊箋?/td>
Page 56-57 ( Chapter 2 鍩烘湰璇█)
濡傛灉浣跨敤class鍏抽敭瀛楁潵瀹氫箟綾伙紝閭d箞瀹氫箟鍦ㄧ涓涓闂爣鍙峰墠鐨勪換浣曟垚鍛橀兘闅愬紡鎸囧畾涓簆rivate錛涘鏋滀嬌鐢╯truct鍏抽敭瀛楋紝閭d箞榪欎簺鎴愬憳閮芥槸public銆備嬌鐢╟lass榪樻槸struct鍏抽敭瀛楁潵瀹氫箟綾伙紝浠呬粎褰卞搷榛樿鐨勫垵濮嬪寲璁塊棶綰у埆銆?br>鍙互絳夋晥鍦板畾涔塖ales_item綾諱負錛?br>struct Sales_item{
    //no need for public label, memebers are public by default
    //operations on Sales_item objects
private:
    std::string isbn;
    unsigned units_sold;
    double revenues
};
鏈緥鐨勭被瀹氫箟鍜屽墠闈㈢殑綾誨畾涔夊彧鏈変袱涓尯鍒細榪欓噷浣跨敤浜嗗叧閿瓧struct錛屽茍涓旀病鏈夊湪鑺辨嫭鍙峰悗浣跨敤鍏抽敭瀛梡ublic銆俿truct鐨勬垚鍛橀兘鏄痯ublic錛岄櫎闈炴湁鍏朵粬鐗規(guī)畩鐨勫0鏄庯紝鎵浠ュ氨娌℃湁蹇呰娣誨姞public鏍囧彿銆?br>鐢╟lass鍜宻truct鍏抽敭瀛楀畾涔夌被鐨勫敮涓宸埆鍦ㄤ簬榛樿璁塊棶綰у埆錛氶粯璁ゆ儏鍐典笅錛宻truct鐨勬垚鍛樹負public錛岃宑lass鐨勬垚鍛樹負private銆?/td>
Page 59 ( Chapter 2 鍩烘湰璇█)
榪欑琛屼負鏈変竴涓緢閲嶈鐨勫惈涔夛細褰撴垜浠湪澶存枃浠朵腑瀹氫箟浜哻onst鍙橀噺鍚庯紝姣忎釜鍖呭惈璇ュご鏂囦歡鐨勬簮鏂囦歡閮芥湁浜嗚嚜宸辯殑const鍙橀噺錛屽叾鍚嶇О鍜屽奸兘涓鏍楓?/td>


volnet 2007-06-16 01:32 鍙戣〃璇勮
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[瀛︿範絎旇]C++ Primer[絎竴绔燷蹇熷叆闂?/title><link>http://m.shnenglu.com/mymsdn/archive/2007/06/09/25908.html</link><dc:creator>volnet</dc:creator><author>volnet</author><pubDate>Sat, 09 Jun 2007 09:29:00 GMT</pubDate><guid>http://m.shnenglu.com/mymsdn/archive/2007/06/09/25908.html</guid><wfw:comment>http://m.shnenglu.com/mymsdn/comments/25908.html</wfw:comment><comments>http://m.shnenglu.com/mymsdn/archive/2007/06/09/25908.html#Feedback</comments><slash:comments>6</slash:comments><wfw:commentRss>http://m.shnenglu.com/mymsdn/comments/commentRss/25908.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/mymsdn/services/trackbacks/25908.html</trackback:ping><description><![CDATA[<p>[鐩殑]</p> <p>璁板綍C++ Primer瀛︿範涓亣鍒扮殑闇瑕佽蹇嗙殑涓滆タ錛岃繖閲屼粎浠ユ垜涓漢涓烘爣鍑嗚繘琛岃褰曘?/p> <p>[鏍煎紡]</p> <p>浠ヤ笅鏍蜂緥浠h〃浜嗘湰鏂囨墍鎻忚堪鐨勬墍鏈夋憳瑕佺墖孌靛皢閫氳繃浠ヤ笅妯$増榪涜鍒涘緩銆?/p> <table cellSpacing=0 cellPadding=2 width=495 border=0 unselectable="on"> <tbody> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493 bgColor=#cccccc>Page [PageIndex] ( Chapter [ChapterIndex] [Title of Chapter])</td> </tr> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493>[姝f枃]</td> </tr> </tbody> </table> <p>[姝f枃]</p> <table cellSpacing=0 cellPadding=2 width=495 border=0 unselectable="on"> <tbody> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493 bgColor=#cccccc>Page 3 ( Chapter 1 蹇熷叆闂?</td> </tr> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493>      鍦ㄥぇ澶氭暟緋葷粺涓紝main鍑芥暟鐨勮繑鍥炲兼槸涓涓姸鎬佹寚紺哄櫒銆傝繑鍥炲?寰寰琛ㄧずmain鍑芥暟鎴愬姛鎵ц瀹屾瘯銆備換浣曞叾浠栭潪闆剁殑榪斿洖鍊奸兘鏈夋搷浣滅郴緇熷畾涔夌殑鍚箟銆傞氬父闈為浂榪斿洖鍊艱〃鏄庢湁閿欒鍑虹幇銆傛瘡涓縐嶆搷浣滅郴緇熼兘鏈夎嚜宸辯殑鏂瑰紡鍛婅瘔鐢ㄦ埛main鍑芥暟榪斿洖浠涔堝唴瀹廣?/td> </tr> </tbody> </table> <table cellSpacing=0 cellPadding=2 width=495 border=0 unselectable="on"> <tbody> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493 bgColor=#cccccc>Page 3 ( Chapter 1 蹇熷叆闂?</td> </tr> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493> <p>鍦ㄤ功涓彁鍒扮殑<br>C:\directory> cl -GX prog1.cpp<br>鍛戒護鍦ㄥ埄鐢╒S2005鎵甯︾殑32浣岰/C++浼樺寲緙栬瘧鍣ㄤ笅浼氬嚭鐜板涓嬫彁紺猴細 <p><strong>鐢ㄤ簬 80x86 鐨?Microsoft (R) 32 浣?C/C++ 浼樺寲緙栬瘧鍣?14.00.50727.762 鐗?br>鐗堟潈鎵鏈?C) Microsoft Corporation銆備繚鐣欐墍鏈夋潈鍒┿?</strong> <p><strong>cl: 鍛戒護琛?warning D9035 :“GX”閫夐」宸插惁鍐籌紝騫跺皢鍦ㄥ皢鏉ョ殑鐗堟湰涓Щ闄?br>cl: 鍛戒護琛?warning D9036 :浣跨敤“EHsc”鑰屼笉浣跨敤“GX”</strong></p> </td> </tr> </tbody> </table> <table cellSpacing=0 cellPadding=2 width=495 border=0 unselectable="on"> <tbody> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493 bgColor=#cccccc>Page 5 ( Chapter 1 蹇熷叆闂?</td> </tr> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493>騫舵病鏈夌洿鎺ュ畾涔夎繘琛岃緭鍏ユ垨杈撳嚭錛圛O錛夌殑浠諱綍璇彞錛岃繖縐嶅姛鑳芥槸鐢辨爣鍑嗗簱鎻愪緵鐨勩?/td> </tr> </tbody> </table> <table cellSpacing=0 cellPadding=2 width=495 border=0 unselectable="on"> <tbody> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493 bgColor=#cccccc>Page 6 ( Chapter 1 蹇熷叆闂?</td> </tr> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493>std::cout<<"Enter two number:"<<std::endl;<br>姣忎釜杈撳嚭鎿嶄綔絎﹀疄渚嬮兘鎺ュ彈涓や釜鎿嶄綔鏁幫細宸︽搷浣滄暟蹇呴』鏄痮stream瀵硅薄錛涘彸鎿嶄綔鏁版槸瑕佽緭鍑虹殑鍊箋傛搷浣滅灝嗗叾鍙蟲搷浣滄暟鍐欏埌浣滀負鍏跺乏鎿嶄綔鏁扮殑ostream瀵硅薄銆?br>錛坰td::cin涓巗td::cout鐩稿弽錛?br>std::cout 宸?#8592;鍙籌紙娉ㄦ剰綆ご鏂瑰悜錛?br>std::cin 宸?#8594;鍙籌紙娉ㄦ剰綆ご鏂瑰悜錛夛級<br>……<br>endl鏄竴涓壒孌婁箣錛岀О涓?strong>鎿嶇旱絎?/strong>錛坢anipulator錛夛紝灝嗗畠鍐欏叆杈撳嚭嫻佹椂錛屽叿鏈夎緭鍑烘崲琛岀殑鏁堟灉錛屽茍鍒鋒柊涓庤澶囩浉鍏寵仈鐨勭紦鍐插尯錛坆uffer錛夈傞氳繃鍒鋒柊緙撳啿鍖猴紝鐢ㄦ埛鍙珛鍗崇湅鍒板啓鍏ュ埌嫻佷腑鐨勮緭鍑恒?/td> </tr> </tbody> </table> <table cellSpacing=0 cellPadding=2 width=495 border=0 unselectable="on"> <tbody> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493 bgColor=#cccccc>Page 16 ( Chapter 1 蹇熷叆闂?</td> </tr> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493>褰撴垜浠嬌鐢╥stream瀵硅薄浣滀負鏉′歡錛岀粨鏋滄槸嫻嬭瘯嫻佺殑鐘舵併傚鏋滄祦鏄湁鏁堢殑錛堜篃灝辨槸璇達紝濡傛灉璇誨叆涓嬩竴涓緭鍏ユ槸鍙兘鐨勶級閭d箞嫻嬭瘯鎴愬姛銆傞亣鍒版枃浠剁粨鏉熺錛坋nd-of-file錛夋垨閬囧埌鏃犳晥杈撳叆鏃訛紝濡傝鍙栦簡涓涓笉鏄暣鏁扮殑鍊鹼紝鍒檌stream瀵硅薄鏄棤鏁堢殑銆傚浜庢棤鏁堢姸鎬佺殑istream瀵硅薄灝嗗鑷存潯浠跺け璐ャ?br>銆愭湰淇℃伅閽堝涓婃枃涓?br>int sum = 0,value;<br>while(std::cin>>value)   //浠ュ墠寰堝皯鍦╳hile閲岄潰浣跨敤榪欐牱鐨勮緭鍏?br>……</td> </tr> </tbody> </table> <table cellSpacing=0 cellPadding=2 width=495 border=0 unselectable="on"> <tbody> <tr> <td style="FONT-SIZE: 9pt" vAlign=top width=493 bgColor=#cccccc>Page 20 ( Chapter 1 蹇熷叆闂?</td> </tr> 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