锘??xml version="1.0" encoding="utf-8" standalone="yes"?>麻豆精品精华液,在线观看国产精品淫,亚洲欧美国产精品va在线观看http://www.shnenglu.com/gujiayue/category/17719.htmlzh-cnMon, 30 May 2016 09:01:06 GMTMon, 30 May 2016 09:01:06 GMT60杈撳叆杈撳嚭緙撳啿鍖哄拰嫻佺殑姒傚康鐞嗚Вhttp://www.shnenglu.com/gujiayue/archive/2016/05/27/213595.html鍙ゆ湀鍙ゆ湀Fri, 27 May 2016 08:10:00 GMThttp://www.shnenglu.com/gujiayue/archive/2016/05/27/213595.htmlhttp://www.shnenglu.com/gujiayue/comments/213595.htmlhttp://www.shnenglu.com/gujiayue/archive/2016/05/27/213595.html#Feedback0http://www.shnenglu.com/gujiayue/comments/commentRss/213595.htmlhttp://www.shnenglu.com/gujiayue/services/trackbacks/213595.html錛堟湰鏂囩珷鍏充簬緙撳啿鍖烘蹇電殑鐞嗚В澶ч儴鍒嗗彇鑷細http://developer.51cto.com/art/201107/277186.htm錛?/span>

蹇掔殑瀵勯佽繃紼嬶細

婧愬湴鍧錛堝晢瀹剁殑浠撳簱錛?#8212;—涓漿鍦幫紙蹇掑叕鍙哥殑浠撳簱錛?#8212;—鐩殑鍦幫紙涔板錛?/span>

鎴戜滑浠庢窐瀹濆晢瀹朵拱琛f湇錛屽晢瀹墮氳繃蹇掑叕鍙告妸鍟嗗搧閫佸埌鎴戜滑鎵嬮噷鐨勮繖涓繃紼嬪彲浠ュ艦璞$殑瑙i噴涓嬬紦瀛樺尯鍜屾祦鐨勮繖涓蹇點?/span>

1錛?nbsp;娣樺疂鍟嗗涓嶄細浜茶嚜鎶婂晢鍝佺粰涔板閫佽繃鏉ョ殑錛屽洜涓鴻繖鏍鋒晥鐜囧お浣庝簡錛屽晢瀹朵細閫氳繃蹇掑叕鍙歌繖涓腑杞紝鐒跺悗蹇掑叕鍙稿啀鎶婁笢瑗塊佺粰涔板銆傛窐瀹濆晢瀹跺氨鏄湪閿洏涓婃墦瀛楋紝涔板灝辨槸紼嬪簭錛岀▼搴忛渶瑕佽鍙栦粠閿洏涓婄殑杈撳叆鐨勫瓧錛岀紦鍐插尯灝辨槸蹇掑叕鍙哥殑浠撳簱銆?/span>

2錛?nbsp;鍟嗗搧鐨勫嚑縐嶄綅緗姸鎬侊細鍟嗗浠撳簱錛屽揩閫掍粨搴擄紝涔板鎵嬩腑錛岃繕鏈変竴縐嶇姸鎬佸氨鏄湪璺笂銆傝緭鍏ヨ緭鍑虹殑嫻佸氨鏄寚鐨勫湪璺笂銆?/span>

3錛?nbsp;蹇掓敹璐у憳鏀跺埌鍟嗗搧灝辨斁鍒拌嚜宸辯殑涓漿浠撳簱涓備絾鏄揩閫掑叕鍙歌偗瀹氱瓑浠撳簱涓殑鍟嗗搧縐瘡鍒頒竴瀹氱▼搴︽墠寮濮嬫淳閫併傝緙撳啿灝辨槸閬囧埌鎹㈣絎︽椂灝辮涓洪渶瑕佹墽琛?/span>I/O鎿嶄綔浜嗐?br />


      涓錛岀紦鍐插尯鐨勬蹇?/span>

緙撳啿鍖哄張鍙互縐頒負緙撳瓨銆傝綆楁満涓殑鍐呭瓨鍙互琚涓烘槸紜洏鐨勭紦瀛樸傚綋cpu璇誨彇鏂囦歡銆佹墽琛岀▼搴忔椂錛屼笉浼氱洿鎺ヤ粠紜洏涓鍙栵紝鑰屾槸鍏堟妸鏂囦歡緙撳瓨鍒板唴瀛樹腑錛岀劧鍚庡啀浠庡唴瀛樹腑璇誨彇銆?/span>

瀵逛簬C++紼嬪簭鏉ヨ錛屽綋綾諱技cin錛?/span>getchar榪欐牱鐨勫璞℃垨鑰呭嚱鏁拌鍙栬緭鍏ユ椂錛屼笉浼氱洿鎺ョ洿鎺ヨ閿洏涓婄殑杈撳叆錛岃屾槸榪欐牱鐨勪竴涓繃紼嬶細cin——杈撳叆緙撳啿鍖?#8212;—閿洏銆傛垜浠粠閿洏涓婅緭鍏ョ殑瀛楃鍏堝瓨鍒扮紦鍐插尯閲岄潰錛?/span>cin浠庣紦鍐插尯閲岄潰璇誨彇杈撳叆銆傚浜庤緭鍑烘潵璇達紝紼嬪簭鐨勭粨鏋滀笉浼氱洿鎺ユ樉紺哄埌灞忓箷涓婏紝鑰屾槸鍏堝瓨鏀懼埌緙撳啿鍖猴紝鐒跺悗cout鎶婂唴瀹逛粠緙撳啿鍖鴻緭鍑哄埌灞忓箷銆?/span>cin鍜?/span>cout鏈川涓婇兘鏄緙撳啿鍖轟腑鐨勫唴瀹硅繘琛屾搷浣溿?/span>

濡傛灉娌℃湁緙撳啿鍖哄氨浼氬ぇ澶ч檷浣?/span>CPU鐨勬晥鐜囷紝鍥犱負cpu灝嗕笉寰椾笉涓鐩寸瓑寰呯敤鎴風殑杈撳叆錛岃屼笉鑳芥墽琛屽叾浠栫殑鎿嶄綔錛屼漢鎵撳瓧杈撳叆鐨勯熷害鍐嶅揩錛屼篃姣斾笉涓?/span>CPU鐨勬墽琛岄熷害錛屼漢鍦ㄨ緭鍏ヤ袱涓瓧絎︿箣闂寸殑闂撮殧鏃墮棿錛?/span>cpu瀹屽叏鍙互鍘誨共鍒殑浜嬫儏銆?/span>

緙撳啿鍖哄垎涓轟笁縐嶅叏緙撳啿銆佽緙撳啿鍜屼笉甯︾紦鍐層?/span>

1銆佸叏緙撳啿

鍦ㄨ繖縐嶆儏鍐典笅錛屽綋濉弧鏍囧噯I/O緙撳瓨鍚庢墠榪涜瀹為檯I/O鎿嶄綔銆傚叏緙撳啿鐨勫吀鍨嬩唬琛ㄦ槸瀵圭鐩樻枃浠剁殑璇誨啓銆?/span>

2銆佽緙撳啿

鍦ㄨ繖縐嶆儏鍐典笅錛屽綋鍦ㄨ緭鍏ュ拰杈撳嚭涓亣鍒版崲琛岀鏃訛紝鎵ц鐪熸鐨?/span>I/O鎿嶄綔銆傝繖鏃訛紝鎴戜滑杈撳叆鐨勫瓧絎﹀厛瀛樻斁鍦ㄧ紦鍐插尯錛岀瓑鎸変笅鍥炶濺閿崲琛屾椂鎵嶈繘琛屽疄闄呯殑I/O鎿嶄綔銆傚吀鍨嬩唬琛ㄦ槸閿洏杈撳叆鏁版嵁銆?/span>

3銆佷笉甯︾紦鍐?/span>

涔熷氨鏄笉榪涜緙撳啿錛屾爣鍑嗗嚭閿欐儏鍐?/span>stderr鏄吀鍨嬩唬琛紝榪欎嬌寰楀嚭閿欎俊鎭彲浠ョ洿鎺ュ敖蹇湴鏄劇ず鍑烘潵銆?/span>

緙撳啿鍖虹殑鍒鋒柊鎸囩殑鏄紦鍐插尯鐨勫唴瀹硅娓呯┖鍒鋒柊錛岃繖涔熷氨鎰忓懗鐫鍒鋒柊涔嬪墠緋葷粺浼氬緙撳啿鍖哄唴瀹硅繘琛?/span>I/O璇誨啓銆備笅闈?/span>4縐嶆儏鍐典細瑙﹀彂緙撳啿鍖虹殑鍒鋒柊錛?/span>

緙撳啿鍖烘弧鏃訛紱

鎵цflush璇彞錛?/span>

鎵цendl璇彞錛?/span>

鍏抽棴鏂囦歡銆?/span>

C/C++紼嬪簭閲岄潰鐨勭紦鍐插尯鎸囩殑鏄負鏍囧噯杈撳叆涓庢爣鍑嗚緭鍑鴻緗殑緙撳啿鍖猴紝濡傛灉鎴戜滑涓嶈涓虹殑璁劇疆鐨勮瘽錛岀郴緇熶細鑷姩鐨勪負鏍囧噯杈撳叆涓庢爣鍑嗚緭鍏ヨ緗竴涓紦鍐插尯錛岃繖涓紦鍐插尯鐨勫ぇ灝忛氬父鏄?/span>4Kb鐨勫ぇ灝忋?/span>

ANSI C瑕佹眰涓嬪垪緙撳瓨鐗瑰緛錛?/span>

(1) 褰撲笖浠呭綋鏍囧噯杈撳叆鍜屾爣鍑嗚緭鍑哄茍涓嶆秹鍙婁氦浜掍綔鐢ㄨ澶囷紙閿洏錛屽睆騫曪級鏃訛紝瀹冧滑鎵嶆槸鍏ㄧ紦瀛樼殑銆?/span> 璇誨啓鏂囦歡鐨勬椂鍊欏氨鏄叏緙撳瓨銆?/span>

(2)鏍囧噯鍑洪敊鍐充笉浼氭槸鍏ㄧ紦瀛樼殑銆?/span>

(3)鏍囧噯杈撳叆鍜岃緭鍑烘秹鍙婁氦浜掍綔鐢ㄨ澶囨椂錛岃櫧鐒舵病鏈夋槑紜瀹氭槸涓嶅甫緙撳瓨鐨勮繕鏄緙撳瓨鐨勶紝浣嗕竴鑸郴緇熼粯璁ゅ畠浠槸琛岀紦瀛樼殑銆?/span>

 鍥犳鎴戜滑緇忓父瑕佺敤鐨勬爣鍑嗚緭鍏ュ拰杈撳嚭錛?/span>stdin銆?/span>stdout鍜?/span>stderr鐨勭紦瀛樼壒寰佹槸錛?/span>stdin鍜?/span>stdout鏄緙撳瓨錛涜?/span>stderr鏄棤緙撳瓨鐨勩?/span>cin鍜?/span>cout閮芥槸浠庣紦鍐插尯璇誨彇

 

 

 

浜屻佹祦鐨勬蹇?/span>

嫻佹槸涓涓繃紼嬶紝涓涓姩鎬佺殑姒傚康銆傚彲浠ユ妸嫻佹兂璞℃垚姘村湪姘寸涓祦鍔ㄧ殑榪囩▼錛屾兂璞℃垚鍟嗗搧蹇掕繍閫佺殑榪囩▼銆?/span>Cin鍜?/span>cout灝辨槸鎵ц嫻佽繖涓繃紼嬬殑浜恒?/span>

瀵逛簬杈撳叆錛?/span>cin璐熻矗鎶婅緭鍏ョ紦鍐插尯涓殑鍐呭浼犻掔粰紼嬪簭錛?/span>

瀵逛簬杈撳嚭錛?/span>cout璐熻矗鎶婅緭鍑虹紦鍐插尯涓殑鍐呭浼犻掔粰灞忓箷銆?/span>

Cin鍜?/span>cout鎶婄紦鍐插尯鐨勬暟鎹彉鎴愭祦錛岀劧鍚庢惉榪愬埌鐩稿簲鐨勭洰鐨勫湴銆?/span>Cin鍜?/span>cout灝辨槸涓惉榪愬伐錛屾惉榪愮殑榪囩▼灝辨槸嫻併?/span>


      涓夈佷唬鐮佹渚?br />      絎竴孌典唬鐮侊細

int main()
{
    string str;
    int i=0;
    while (cin >> str)
    {
        cout << str<<endl;
        cout << ++i << endl;
    }
    return 0;
}
紼嬪簭鎵ц榪囩▼涓緭鍏ワ細i love you
鏈緇堢粨鏋滄槸錛?br />
i
1
love
2
you
3

鎵ц榪囩▼涓紝紼嬪簭騫朵笉浼氬湪姣忔杈撳叆涓涓┖鏍兼椂灝辨墦鍗頒竴嬈★紝鑰屽湪鍦ㄥ畬鍏ㄨ緭鍏ヤ竴琛屽瓧絎︿覆騫舵憗涓嬪洖杞﹀悗錛屾墠浼氭墦鍗般傚師鍥犲氨鏄湪鎴戜滑杈撳叆鍥炶濺涔嬪墠鐨勪竴琛屽瓧絎︿覆閮藉彧鏄瓨鏀懼埌浜嗕負鏍囧噯杈撳叆鍒嗛厤鐨勭紦鍐插尯涓紝榪欐槸涓涓緙撳啿鍖猴紝鍦ㄩ亣鍒版崲琛岀涔嬪墠錛岀紦鍐插尯涓嶄細鍒鋒柊涔熷氨涓嶄細瑙﹀彂I/O鎿嶄綔錛宑in涔熷氨娌℃湁鍦ㄨ鍙栨暟鎹傝緭鍏ュ洖杞﹀悗錛宑in寮濮嬫墽琛孖/O鎿嶄綔錛岃鍙栫紦鍐插尯涓殑瀛楃錛氶鍏堣鍙杋錛岀劧鍚庨亣鍒頒簡絀烘牸錛屾嬈¤鍙栧畬鎴愶紝鎵ц寰幆銆傜劧鍚庢帴鐫璇誨彇love錛屽張閬囧埌浜嗙┖鏍鹼紝璇誨彇瀹屾垚錛屾墽琛屽驚鐜傛渶鍚庤鍙栦簡you銆?br />絎簩孌典唬鐮侊細

int main()
{
    char c;
    //絎竴嬈¤皟鐢╣etchar()鍑芥暟  
    
//紼嬪簭鎵ц鏃訛紝鎮ㄥ彲浠ヨ緭鍏ヤ竴涓插瓧絎﹀茍鎸変笅鍥炶濺閿紝鎸変笅鍥炶濺閿悗璇ュ嚱鏁版墠榪斿洖  
    c = getchar();
    //鏄劇ずgetchar()鍑芥暟鐨勮繑鍥炲?nbsp; 
    cout << c << endl;
    //鏆傚仠  
    system("PAUSE");
    //寰幆澶氭璋冪敤getchar()鍑芥暟  
    
//灝嗘瘡嬈¤皟鐢╣etchar()鍑芥暟鐨勮繑鍥炲兼樉紺哄嚭鏉?nbsp; 
    
//鐩村埌閬囧埌鍥炶濺絎︽墠緇撴潫  
    while ((c = getchar()) != '\n')
    {
        printf("%c", c);
    }
    //鏆傚仠  
    system("PAUSE");
    return 0;
}
鎵ц紼嬪簭錛岃緭鍏ワ細abcdefg,鐒跺悗鍥炶濺
紼嬪簭緇撴灉濡備笅錛?br />a
bcdefg

絎竴嬈℃墽琛屽埌getchar鏃訛紝鐢變簬姝ゆ椂緙撳啿鍖洪噷闈㈡病鏈変換浣曞唴瀹癸紝鎵浠ョ▼搴忕瓑寰呴敭鐩樼殑杈撳叆錛岃緭鍏bcdefg鍚庯紝鐒跺悗杈撳叆鍥炶濺錛岃Е鍙戜簡琛岀紦鍐茬殑鏉′歡錛屾墽琛孖/O錛実etchar寮濮嬭鍙栫紦鍐插尯鐨勫唴瀹癸紝鐢變簬姝ゅ嚱鏁板彧璇誨彇涓涓瓧絎︼紝鎵浠ヨ瀹屽瓧絎鍚庯紝璇誨彇緇撴潫錛屾墽琛屼笅闈㈢殑璇彞錛屽皢a鎵撳嵃鍒板睆騫曘傜敱浜庣紦鍐插尯涓瓧絎﹀彧琚鍙栦簡1涓瓧絎錛屽墿浣欑殑bcdefg榪樺湪緙撳啿鍖轟腑錛屽洜姝ゆ墽琛屽埌while涓殑getchar鏃訛紝鐩存帴璇誨彇緙撳啿鍖轟腑鐨勫唴瀹癸紝涔熷氨鏄緷嬈¤鍙朾cdefg錛屽洖杞︾涔熸槸緙撳啿鍖轟腑鐨勪竴涓瓧絎︼紝褰撹鍙栧畬鍥炶濺鍚庯紝while寰幆緇撴潫銆?br />



鍙ゆ湀 2016-05-27 16:10 鍙戣〃璇勮
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c++涓璭xplict鍏抽敭瀛楃殑璇存槑鍜屼嬌鐢?/title><link>http://www.shnenglu.com/gujiayue/archive/2012/09/19/191270.html</link><dc:creator>鍙ゆ湀</dc:creator><author>鍙ゆ湀</author><pubDate>Wed, 19 Sep 2012 10:15:00 GMT</pubDate><guid>http://www.shnenglu.com/gujiayue/archive/2012/09/19/191270.html</guid><wfw:comment>http://www.shnenglu.com/gujiayue/comments/191270.html</wfw:comment><comments>http://www.shnenglu.com/gujiayue/archive/2012/09/19/191270.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/gujiayue/comments/commentRss/191270.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/gujiayue/services/trackbacks/191270.html</trackback:ping><description><![CDATA[<span style="font-size: 13px; color: #008080; ">鍏堢湅涓嬮潰榪欎竴涓畝鍗曠殑浠g爜鍚?br /><br /></span><span style="font-size: 13px; color: #008080; "> 1</span><span style="font-size: 13px; background-color: #eeeeee; "> #include <iostream></span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; "> 2</span><span style="font-size: 13px; background-color: #eeeeee; "> </span><span style="font-size: 13px; color: #0000ff; ">using</span><span style="font-size: 13px; background-color: #eeeeee; "> </span><span style="font-size: 13px; color: #0000ff; ">namespace</span><span style="font-size: 13px; background-color: #eeeeee; "> std;</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; "> 3</span><span style="font-size: 13px; background-color: #eeeeee; "> </span><span style="font-size: 13px; color: #0000ff; ">class</span><span style="font-size: 13px; background-color: #eeeeee; "> my</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; "> 4</span><span style="font-size: 13px; background-color: #eeeeee; "> {</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; "> 5</span><span style="font-size: 13px; background-color: #eeeeee; "> </span><span style="font-size: 13px; color: #0000ff; ">private</span><span style="font-size: 13px; background-color: #eeeeee; ">:</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; "> 6</span><span style="font-size: 13px; background-color: #eeeeee; ">     </span><span style="font-size: 13px; color: #0000ff; ">int</span><span style="font-size: 13px; background-color: #eeeeee; "> t;</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; "> 7</span><span style="font-size: 13px; background-color: #eeeeee; "> </span><span style="font-size: 13px; color: #0000ff; ">public</span><span style="font-size: 13px; background-color: #eeeeee; ">:</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; "> 8</span><span style="font-size: 13px; background-color: #eeeeee; ">     my(){};</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; "> 9</span><span style="font-size: 13px; background-color: #eeeeee; ">     my(</span><span style="font-size: 13px; color: #0000ff; ">int</span><span style="font-size: 13px; background-color: #eeeeee; "> i):t(i){};</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">10</span><span style="font-size: 13px; background-color: #eeeeee; ">     </span><span style="font-size: 13px; color: #0000ff; ">int</span><span style="font-size: 13px; background-color: #eeeeee; "> </span><span style="font-size: 13px; color: #0000ff; ">get</span><span style="font-size: 13px; background-color: #eeeeee; ">()</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">11</span><span style="font-size: 13px; background-color: #eeeeee; ">     {</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">12</span><span style="font-size: 13px; background-color: #eeeeee; ">         </span><span style="font-size: 13px; color: #0000ff; ">return</span><span style="font-size: 13px; background-color: #eeeeee; "> t;</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">13</span><span style="font-size: 13px; background-color: #eeeeee; ">     }</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">14</span><span style="font-size: 13px; background-color: #eeeeee; ">     </span><span style="font-size: 13px; color: #0000ff; ">void</span><span style="font-size: 13px; background-color: #eeeeee; "> print(my d)</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">15</span><span style="font-size: 13px; background-color: #eeeeee; ">     {</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">16</span><span style="font-size: 13px; background-color: #eeeeee; ">         cout<<d.</span><span style="font-size: 13px; color: #0000ff; ">get</span><span style="font-size: 13px; background-color: #eeeeee; ">()<<endl;</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">17</span><span style="font-size: 13px; background-color: #eeeeee; ">     }</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">18</span><span style="font-size: 13px; background-color: #eeeeee; "> };</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">19</span><span style="font-size: 13px; background-color: #eeeeee; "> </span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">20</span><span style="font-size: 13px; background-color: #eeeeee; "> </span><span style="font-size: 13px; color: #0000ff; ">int</span><span style="font-size: 13px; background-color: #eeeeee; "> main()</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">21</span><span style="font-size: 13px; background-color: #eeeeee; "> {</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">22</span><span style="font-size: 13px; background-color: #eeeeee; ">     my t;</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">23</span><span style="font-size: 13px; background-color: #eeeeee; ">     </span><span style="font-size: 13px; color: #0000ff; ">int</span><span style="font-size: 13px; background-color: #eeeeee; "> i=3;</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">24</span><span style="font-size: 13px; background-color: #eeeeee; ">     t.print(i);</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">25</span><span style="font-size: 13px; background-color: #eeeeee; ">     </span><span style="font-size: 13px; color: #0000ff; ">return</span><span style="font-size: 13px; background-color: #eeeeee; "> 0;</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; ">26</span><span style="font-size: 13px; background-color: #eeeeee; "> }</span><br style="font-size: 13px; " /><span style="font-size: 13px; color: #008080; "><br /></span><span style="font-size: 14pt; ">main鍑芥暟涓璽.print(i);鐨勮皟鐢紝my綾婚噷闈rint鍑芥暟鎺ュ彈鐨勬暟鎹被鍨嬬殑my錛屼笉鏄痠nt錛屼絾榪欐紼嬪簭浠嶇劧鑳藉姝e父榪愯錛屾槸鍥犱負my綾婚噷闈㈠瓨鍦ㄤ竴涓彧鏈変竴涓艦鍙傜殑鏋勯犲嚱鏁般?br /></span><br style="font-size: 13px; " /><span style="font-size: 14pt; ">褰撳湪涓涓渶瑕乵y綾誨瀷瀵硅薄鐨勫湴鏂癸紙姣斿print鍑芥暟錛屽氨闇瑕佷竴涓猰y綾誨瀷瀵硅薄錛夛紝浣嗘槸濡傛灉鍗存病鏈夌粰涓涓猰y綾誨瀷瀵硅薄錛岀粰浜嗕竴涓叾浠栫被鍨嬬殑瀵硅薄錛屾瘮濡俰nt錛岄偅涔堣繖涓椂鍊欏氨浼氱湅榪欎釜綾繪湁娌℃湁瀹氫箟涓涓彧鎺ュ彈涓涓弬鏁扮殑鏋勯犲嚱鏁幫紝鑰屼笖榪欎釜褰㈠弬蹇呴』鏄痠nt錛岀劧鍚庢瀯閫犲嚭涓涓猰y綾誨瀷涓存椂瀵硅薄錛屽啀鎶婅繖涓復鏃跺璞$粰闇瑕乵y綾誨璞$殑鍦版柟錛屽畬鎴愪竴縐嶉殣寮忕殑杞崲銆?/span><br style="font-size: 13px; " /><span style="font-size: 14pt; ">娉ㄦ剰錛氬鏋滆繖涓被鏈変竴涓帴鍙椾竴涓弬鏁扮殑鏋勯犲嚱鏁幫紝浣嗘槸榪欎釜鍙傛暟鐨勭被鍨嬫瘮濡傛槸string錛岃繖涓殣寮忚漿鎹㈣偗瀹氬氨涓嶄細鍙戠敓浜嗭紝緙栬瘧鏃朵細鎻愮ず閿欒銆?br /></span><br style="font-size: 13px; " /><span style="font-size: 14pt; ">鎬諱箣錛岄殣寮忚漿鎹細鍙戠敓鍦紝鏈潵闇瑕佷竴涓繖縐嶇被瀵硅薄鐨勬椂鍊欙紝鍗寸粰浜嗕竴涓叾浠栫殑鏁版嵁綾誨瀷錛岃屼笖綾諱篃鎭板ソ鏈変竴涓彧鎺ュ彈涓涓繖縐嶆暟鎹被鍨嬪弬鏁扮殑鏋勯犲嚱鏁幫紝灝變細鍏堣皟鐢ㄨ繖涓瀯閫犲嚱鏁扮敓鎴愪竴涓復鏃跺璞★紝鎺ョ潃灝嗚繖涓存椂瀵硅薄鐢ㄤ簬闇瑕佽繖縐嶇被瀵硅薄鐨勫湴鏂廣?/span><br style="font-size: 13px; " /><br style="font-size: 13px; " /><span style="font-size: 14pt; ">浣嗘槸寰堝鏃跺欙紝榪欑闅愬紡杞崲浼氬甫鏉ュ緢澶х殑楹葷儲錛屽洜姝ゅ鏋滆嚜宸卞畾涔夌殑綾諱腑錛屾湁涓涓彧鎺ュ彈涓涓弬鏁扮殑鏋勯犲嚱鏁幫紝</span><span style="font-family: verdana, 'ms song', 瀹嬩綋, Arial, 寰蔣闆呴粦, Helvetica, sans-serif; line-height: 19px; background-color: #fefef2; font-size: 14pt; ">闄ら潪鏈変竴涓ソ鐞嗙敱鍏佽鏋勯犲嚱鏁拌鐢ㄤ簬闅愬紡綾誨瀷杞崲錛屽惁鍒?/span><span style="font-size: 14pt; ">閭d箞灝辮鍦ㄨ繖涓瀯閫犲嚱鏁板墠闈㈠姞涓涓叧閿瘝 explicit錛岃〃鏄庝笉浼氬彂鐢熼殣寮忚漿鎹€?/span><img src ="http://www.shnenglu.com/gujiayue/aggbug/191270.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/gujiayue/" target="_blank">鍙ゆ湀</a> 2012-09-19 18:15 <a href="http://www.shnenglu.com/gujiayue/archive/2012/09/19/191270.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>鍐嶈皥涓嬪0鏄庛佸畾涔夈佸垵濮嬪寲銆佽祴鍊煎拰externhttp://www.shnenglu.com/gujiayue/archive/2012/06/07/177916.html鍙ゆ湀鍙ゆ湀Thu, 07 Jun 2012 07:41:00 GMThttp://www.shnenglu.com/gujiayue/archive/2012/06/07/177916.htmlhttp://www.shnenglu.com/gujiayue/comments/177916.htmlhttp://www.shnenglu.com/gujiayue/archive/2012/06/07/177916.html#Feedback0http://www.shnenglu.com/gujiayue/comments/commentRss/177916.htmlhttp://www.shnenglu.com/gujiayue/services/trackbacks/177916.html

1.      澹版槑銆佸畾涔夈佸垵濮嬪寲鍜岃祴鍊煎洓涓湳璇湁鐫鏈川鐨勪笉鍚岋紝铏界劧鏈夋椂鍊欑湅璧鋒潵宸笉澶氱敋鑷沖畬鍏ㄤ竴鏍鳳紝浣嗗鏋滀笉鎼炴竻妤氬緢瀹規槗鍑虹幇閿欒錛屾垨鑰呴敊浜嗕笉鐭ラ亾鎬庝箞鏀廣?/span>

 

2.     a: extern鍏抽敭璇嶇敤鏉ヨ〃鏄庤繖鏄竴涓0鏄庯細extern int I;鍙橀噺i灝辨槸涓涓0鏄庛?/span>澹版槑鍓嶉潰涓瀹氳鏈変竴涓叧閿瓧extern錛屾病鏈夎繖涓叧閿瘝灝變笉鏄竴涓0鏄庛?/span>

b: 娌℃湁extern灝辨槸涓涓畾涔夛紝姣斿int i=9錛涙槸涓涓畾涔夛紝鐗瑰埆瑕佹敞鎰忕殑鏄?/span>int i;榪欎篃鏄竴涓畾涔夈?/span>

c: 鍒濆鍖栧氨鏄湪鍙橀噺瀹氫箟鏃剁粰鍙橀噺涓涓垵鍊鹼紝鎵浠ュ垵濮嬪寲璇彞涔熶竴瀹氭槸涓涓畾涔夎鍙ワ紝浣嗗弽榪囨潵灝變笉瀵逛簡錛屽洜涓虹被浼間簬錛?/span>int i錛涘氨鏄畾涔夛紝浣嗘病鏈夊垵濮嬪寲銆傜壒鍒娉ㄦ剰鐨勬槸錛?/span>extern int i = 9錛涜櫧鐒舵湁extern鍏抽敭璇嶏紝浣嗘槸鍥犱負鍒濆鍖栦簡錛屾墍浠ヨ繖涔熸槸涓涓畾涔?/span>錛屼笉鏄0鏄庛?/span>

d: 璧嬪艱鍙ュ氨綆鍗曚簡錛岃祴鍊艱鍙ユ槸緇欎竴涓凡緇忓畾涔夌殑鍙橀噺錛堜笉綆¤繖涓彉閲忔湁娌℃湁鍒濆鍖栵級涓涓柊鍊箋傜壒鍒娉ㄦ剰鐨勬槸錛?/span>瑕佺粰璧嬪肩殑鍙橀噺蹇呴』宸茬粡瀹氫箟榪囦簡錛屼粎浠呭0鏄庢槸涓嶈鐨勩?/span>

 

3.       extern鍏抽敭璇嶉櫎浜嗚〃鏄庤繖鏄竴涓0鏄庝互澶栵紝鏇撮噸瑕佺殑鏄〃鏄庯細鎵澹版槑鐨勫彉閲忕殑瀹氫箟鍙兘鏄湪紼嬪簭涓叾浠栨枃浠墮噷銆傚涓嬩唬鐮?br />

    //file1.cpp

#include <iostream>
using namespace std;
extern int i;//榪欐槸涓涓0鏄庯紝鍛婅瘔緙栬瘧鍣ㄥ彉閲廼鐨勫畾涔夋湁鍙兘鏄湪鍏朵粬婧愭枃浠朵腑錛屽嵆浣挎湰鏂囦歡涓病鏈塱鐨勫畾涔夛紝浣犱篃涓嶈鎶ラ敊銆?/span>
void main()
{
    extern int i;//鍚屾牱鏄i鐨勫0鏄庯紝浣滅敤涓庝笂闈㈢殑澹版槑瀹屽叏涓鏍鳳紝璇存槑澹版槑鍙互瀛樺湪澶氫釜錛屽疄闄呬笂榪欎袱涓0鏄庡彧瑕佷換鎰忎竴涓氨鍙互浜嗐備絾鏄袱涓0鏄庤鍙ュ鏋滀竴涓兘娌℃湁錛岀紪璇戝櫒灝變細璁や負鍙橀噺i娌℃湁瀹氫箟錛屼細鎶ラ敊銆?br />
    i=0;//璧嬪艱鍙ワ紝緇欏彉閲廼涓涓柊鍊鹼紝鍙橀噺璧嬪煎墠蹇呴』瑕佸凡緇忓畾涔変簡錛屽鏋滀笉瀛樺湪file2鏂囦歡涓殑瀹氫箟璇彞錛岃櫧鐒朵笉浼氬嚭鐜扮紪璇戦敊璇紝浣嗘槸閾炬帴浼氭湁閿欍?/span>
    cout<<i;
}

//file2.cpp

int i;//棣栧厛鏄竴涓畾涔夛紝鑰屼笖鏄竴涓病鏈夊垵濮嬪寲鐨勫畾涔夛紙涓嶈繃瀹為檯涓婂叏灞鍙橀噺i琚粯璁ゅ垵濮嬪寲涓?錛夛紝鍙橀噺i琚畾涔夊湪file2婧愭枃浠朵腑

 

 

4.      涓涓▼搴忎腑鍙兘鍖呮嫭涓嶅彧涓涓枃浠訛紝鎵鏈夋枃浠朵腑鍚屼竴涓彉閲忥紙鍏跺疄涓昏璇寸殑鍏ㄥ眬鍙橀噺錛夊繀欏繪誨叡鍙兘瀹氫箟涓嬈★紝浣嗘槸澹版槑鍙互鏈夋棤鏁頒釜銆傝屼笖濡傛灉鏂囦歡A涓敤鍒扮殑鍙橀噺鐨勫畾涔夋槸鍦ㄥ叾浠栨枃浠朵腑錛岄偅涔堝湪鏂囦歡A涓敤榪欎釜鍙橀噺涔嬪墠錛屼竴瀹氳鍔犱笂涓鍙?/span>extern澹版槑璇彞錛屽憡璇夌紪璇戝櫒鎴戞墍鐢ㄧ殑榪欎釜鍙橀噺鏈夊彲鑳芥槸鍦ㄥ叾浠栨枃浠墮噷

5.   extern int i=9錛涗笂闈㈠凡緇忔彁鍒拌櫧鐒舵湁extern錛屼絾榪欎篃鏄竴涓畾涔夛紝鍥犱負鍒濆鍖栦簡銆?span style="color: red; ">綾諱技浜庤繖縐嶆湁extern涔熸湁鍒濆鍖栫殑璇彞錛屽彧鑳藉嚭鐜板湪鍏ㄥ眬浣滅敤鍩燂紝濡傛灉鍑虹幇鍦ㄥ嚱鏁板唴閮紝榪欐槸閿欒鐨勩?/span>

6.       錛堣漿錛夋湁鍏崇紪璇戝櫒鐨勪竴涓壒鐐癸細鐜頒唬緙栬瘧鍣ㄤ竴鑸兘灞炰簬鎸夋枃浠剁紪璇戯紝灝辨槸璇寸紪璇戞椂澶氫釜婧愭枃浠惰嚜宸辯紪璇戣嚜宸辯殑錛屼簰涓嶅獎鍝嶏紝濂藉儚鍙湁鑷繁涓涓枃浠躲?/span>鍙姣忎釜鏂囦歡緙栬瘧鏃舵病鏈夊嚭鐜伴敊璇紝閭d箞灝變笉浼氬彂鐢熺紪璇戞椂閿欒銆備絾鏄?/span>娌℃湁鍙戠敓緙栬瘧閿欒錛屽茍涓嶄唬琛ㄧ▼搴忓氨娌℃湁閿欒錛屽洜涓鴻繕浼氬彂鐢熼摼鎺ラ敊璇?/span>銆傛瘮濡備笅闈㈣繖涓や釜浠g爜

     //A.cpp
int i;//榪欐槸鍙橀噺i鐨勫畾涔?/span>
 
void main()
{
}

//B.cpp
int i;//榪欎篃鏄彉閲廼鐨勫畾涔?/span>
緙栬瘧鏃朵袱涓枃浠禔鍜孊鏄浉浜掍笉褰卞搷鐨勶紝鎵浠ョ紪璇戞椂涓嶄細鍑虹幇浠諱綍閿欒錛屼絾鏄繖涓▼搴忔槸鏈夐棶棰樼殑錛屽洜涓哄叏灞鍙橀噺i鏄瀹氫箟浜嗕袱嬈$殑錛屾墍浠ラ摼鎺ユ椂灝變細鎶ュ憡綾諱技浜庝笅闈㈢殑閿欒錛?br />

B.obj : error LNK2005: "int i" (?i@@3HA) already defined in A.obj

Debug/A.exe : fatal error LNK1169: one or more multiply defined symbols found

鍙﹀涓婇潰涔熸彁鍒頒簡錛岀紪璇戞椂鍚勪釜鏂囦歡鏄浉浜掍笉褰卞搷鐨勶紝緙栬瘧鍣ㄦ槸涓嶄細璁や負鍦ㄨ繖涓枃浠朵腑娌℃湁瀹氫箟鐨勫彉閲忓叾瀹炲緢鏈夊彲鑳戒漢瀹舵槸涓叏灞鍙橀噺錛屽湪鍏朵粬鏂囦歡涓畾涔変簡錛岃繖灝辮鎶ラ敊銆傝В鍐蟲柟娉曞氨鏄敤extern澹版槑涓涓彉閲忥紝鍛婅瘔緙栬瘧鍣ㄤ漢瀹惰繖涓彉閲忎笉鏄病鏈夊畾涔夛紝鍙槸鍦ㄥ叾浠栨枃浠朵腑瀹氫箟浜?/span>錛屼綘鍒姤閿欎簡銆?/span>

 



鍙ゆ湀 2012-06-07 15:41 鍙戣〃璇勮
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鏂板鍒扮殑鏈夊叧cin杈撳叆嫻佺殑鐗圭偣銆佺敤娉?/title><link>http://www.shnenglu.com/gujiayue/archive/2012/05/28/cin.html</link><dc:creator>鍙ゆ湀</dc:creator><author>鍙ゆ湀</author><pubDate>Sun, 27 May 2012 16:20:00 GMT</pubDate><guid>http://www.shnenglu.com/gujiayue/archive/2012/05/28/cin.html</guid><wfw:comment>http://www.shnenglu.com/gujiayue/comments/176424.html</wfw:comment><comments>http://www.shnenglu.com/gujiayue/archive/2012/05/28/cin.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/gujiayue/comments/commentRss/176424.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/gujiayue/services/trackbacks/176424.html</trackback:ping><description><![CDATA[<div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->#include <iostream><br /><br /><span style="color: #0000FF; ">using</span> <span style="color: #0000FF; ">namespace</span> std;<br /><span style="color: #0000FF; ">void</span> main()<br />{<br />    <span style="color: #0000FF; ">double</span> val;<br />    <span style="color: #0000FF; ">char</span> ch0,ch1;<br />    cin>>val;<br />    cout<<val<<endl;<br />    cin>>ch0;<br />    cout<<ch0<<endl;<br />    cin>>ch1;<br />    cout<<ch1<<endl;<br />}<br /><br />cin杈撳叆嫻佺敤娉曚箣鍓嶅鐨勪笉璁ょ湡錛屽拷鐣ュ埌浜嗐?br />榪欐浠g爜寰堢畝鍗曪紝寮濮嬬涓涓緭鍏ョ殑鏃跺欙紝姣斿鐩存帴杈撳叆錛?23ab銆傛渶鍚庣殑緇撴灉鏄妸123緇欎簡val錛宎緇欎簡ch0,b緇欎簡ch1銆?br />涔熷氨鏄錛屽綋cin緇欎竴涓猟ouble鏃訛紝榪欐椂濡傛灉浣犵殑杈撳叆鏄?23ab錛屼笉鏄崟綰殑涓涓暟瀛楁椂錛岄偅涔堝皢鍙槸鎶婅緭鍏ョ殑鏁板瓧閮ㄥ垎123緇檇ouble錛?span style="color: red; "><strong>浣嗘槸鍓╀笅鐨刟b涓嶆槸綆鍗曠殑閬楀純鎺?/strong></span>錛岃屾槸緇х畫鐣欏湪杈撳叆嫻佷腑錛岀瓑寰呬笅涓嬈″嚭鐜癱in鍐嶆妸ab緇欏埌涓嬩竴涓浠庤緭鍏ユ祦寰楀埌鍊肩殑鍙橀噺銆?/div><img src ="http://www.shnenglu.com/gujiayue/aggbug/176424.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/gujiayue/" target="_blank">鍙ゆ湀</a> 2012-05-28 00:20 <a href="http://www.shnenglu.com/gujiayue/archive/2012/05/28/cin.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>閯欎漢榪欒緢瀛愮紪鍐欑殑絎竴涓父鎴忕▼搴忥細鐚滄嫵錛?濂芥縺鍔紝鍏變韓涓媍++婧愪唬鐮?/title><link>http://www.shnenglu.com/gujiayue/archive/2012/01/13/164145.html</link><dc:creator>鍙ゆ湀</dc:creator><author>鍙ゆ湀</author><pubDate>Fri, 13 Jan 2012 14:30:00 GMT</pubDate><guid>http://www.shnenglu.com/gujiayue/archive/2012/01/13/164145.html</guid><wfw:comment>http://www.shnenglu.com/gujiayue/comments/164145.html</wfw:comment><comments>http://www.shnenglu.com/gujiayue/archive/2012/01/13/164145.html#Feedback</comments><slash:comments>7</slash:comments><wfw:commentRss>http://www.shnenglu.com/gujiayue/comments/commentRss/164145.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/gujiayue/services/trackbacks/164145.html</trackback:ping><description><![CDATA[     鎽樿: 鐭沖ご鍓瓙甯冪殑鐚滄嫵娓告垙錛屽湪VC涓嬬紪璇戣繍琛屼笅錛岀敓鎴愮殑.EXE鏂囦歡錛屽氨鍙互鍗曠嫭鎷垮嚭鏉ョ帺娓告垙浜嗐傝繖涓父鎴忓睘浜?.1鐗堟湰錛屾渶鍘熷鐨?.0鐗堟湰涓昏閮ㄥ垎鍜岃繖涓樊涓嶅錛?.1涓昏鏄湪鍘熸潵鐨勫熀紜涓婁笌鐜╁鐨勪氦浜掑仛浜嗕竴浜涙洿鍔犲弸濂界殑鏀硅繘錛堟劅璋㈡彁鍑烘敼榪涙剰瑙佺殑瀹胯垗鍏勫紵錛夌▼搴忓熀鏈病鏈夊お澶х殑鎶鏈惈閲忥紝鑷涓虹▼搴忔牳蹇冪殑閮ㄥ垎:鐢佃剳闅忔満緇欏嚭鐨勭寽鎷熾傛湰浜烘兂鍒頒簡涓涓緢綆鍗曚絾鑷涓烘尯宸у鐨勬柟娉曪紙灝忓皬鐨勯獎鍌蹭笅錛夛紝涓嶅璇翠簡鐪嬩唬鐮佸惂錛屽鏋滀唬鐮佹湁浠...  <a href='http://www.shnenglu.com/gujiayue/archive/2012/01/13/164145.html'>闃呰鍏ㄦ枃</a><img src ="http://www.shnenglu.com/gujiayue/aggbug/164145.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/gujiayue/" target="_blank">鍙ゆ湀</a> 2012-01-13 22:30 <a href="http://www.shnenglu.com/gujiayue/archive/2012/01/13/164145.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>瀛楃涓叉搷浣滃嚱鏁頒腑鐨勫弬鏁伴棶棰?/title><link>http://www.shnenglu.com/gujiayue/archive/2011/12/25/162780.html</link><dc:creator>鍙ゆ湀</dc:creator><author>鍙ゆ湀</author><pubDate>Sun, 25 Dec 2011 08:25:00 GMT</pubDate><guid>http://www.shnenglu.com/gujiayue/archive/2011/12/25/162780.html</guid><wfw:comment>http://www.shnenglu.com/gujiayue/comments/162780.html</wfw:comment><comments>http://www.shnenglu.com/gujiayue/archive/2011/12/25/162780.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/gujiayue/comments/commentRss/162780.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/gujiayue/services/trackbacks/162780.html</trackback:ping><description><![CDATA[<div>榪欎釜棣栧厛鍏堣В閲婁笅涓涓緢鍩虹浣嗘槸鍗村緢閲嶈鍙堝父甯稿鏄撴悶娣風殑闂銆?br />char a[]鍜宑har*鐨勫尯鍒?br />銆奵璇█紼嬪簭璁捐銆嬶紙涓枃鐗堬級鐨勮В閲婃尯涓嶉敊鐨勶紝鎴戝啀澶ф璇翠竴涓嬨?br />..............................<br />char ame[] = "nw is the time"; <br />char *pme = "now is the time";<br />棣栧厛璇磒me鏄妸涓涓寚鍚戣瀛楃鏁扮粍鐨勬寚閽堣祴鍊肩粰pme.榪欎釜榪囩▼娌℃湁娑夊強鍒板瓧絎︿覆鐨勫鍒訛紝鍙槸鏈夋寚閽堢殑鎿嶄綔銆俻me棣栧厛鏄竴涓寚閽堬紝榪欎釜鎸囬拡鎸囧悜涓涓瓧絎︿覆甯擱噺錛岃繖涓寚閽堟鍚庡彲浠ヨ淇敼涓烘寚鍚戝叾瀹冨瓧絎︿覆錛屼絾鏄鏋滀慨鏀瑰瓧絎︿覆鏈韓鐨勫唴瀹癸紝緇撴灉鏄湭瀹氫箟鐨勩俛me鏄竴涓瓨鏀懼垵濮嬪寲瀛楃涓插拰絀哄瓧絎︾殑涓緇存暟緇勶紝鏁扮粍涓殑鍗曚釜瀛楃閮芥槸鍙互琚慨鏀圭殑錛屼絾鏄痑me鏄釜鍦板潃甯擱噺錛屾槸涓嶅彲浠ヨ淇敼鐨勶紝瀹冨緇堟寚鍚戣繖涓涓瓧絎︿覆銆?br /><br />string.h涓畾涔変簡寰堝瀛楃涓叉搷浣滃嚱鏁幫紝姣斿strncat錛岃繖浜涘嚱鏁拌嚦灝戦兘鏈変袱涓弬鏁幫紝絎竴涓弬鏁版槸鐩殑瀛楃涓詫紝絎簩涓弬鏁版槸婧愬瓧絎︿覆銆?br />鍏充簬榪欎釜鍙傛暟鐨勭被鍨嬪埌搴曠敤鍝錛?strong style="color: #ff0000; font-size: 14pt">瑕佺湅鐩稿叧鐨勫弬鏁板唴瀹瑰湪鍑芥暟鎵ц瀹屼互鍚庢槸涓嶆槸浼氬彂鐢熸敼鍙樸傚鏋滃弬鏁板唴瀹瑰彂鐢熸敼鍙樹簡灝辮鐢╟har[]錛屽鏋滃弬鏁扮殑鍐呭涓嶅彂鐢熸敼鍙樺垯涓や釜閮藉彲浠ョ敤銆?/strong><strong><br /><br /></strong>姣斿strncat錛坰,ct,n)錛屽嚱鏁扮殑浣滅敤鏄妸ct鐨勫墠n涓瓧絎﹁繛鎺ュ埌s鐨勫悗闈紝鏈鍚庤ˉ涓婁竴涓┖瀛楃銆傞偅涔堟樉鐒舵墽琛屽畬浠ュ悗s鐨勫唴瀹規槸鍙樺寲浜嗙殑錛屾墍浠ュ畾涔塻鏄繀欏繪槸char s[80]錛屼笉鑳芥槸char *s錛屽浜巆t鏉ヨ鍐呭娌℃湁鍙戠敓鍙樺寲錛屾庝箞瀹氫箟灝遍兘鍙互浜嗐?/div><img src ="http://www.shnenglu.com/gujiayue/aggbug/162780.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/gujiayue/" target="_blank">鍙ゆ湀</a> 2011-12-25 16:25 <a href="http://www.shnenglu.com/gujiayue/archive/2011/12/25/162780.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>fopen鍑芥暟鐨勪嬌鐢ㄧ殑鍑犵鏂瑰紡http://www.shnenglu.com/gujiayue/archive/2011/12/25/162775.html鍙ゆ湀鍙ゆ湀Sun, 25 Dec 2011 06:08:00 GMThttp://www.shnenglu.com/gujiayue/archive/2011/12/25/162775.htmlhttp://www.shnenglu.com/gujiayue/comments/162775.htmlhttp://www.shnenglu.com/gujiayue/archive/2011/12/25/162775.html#Feedback0http://www.shnenglu.com/gujiayue/comments/commentRss/162775.htmlhttp://www.shnenglu.com/gujiayue/services/trackbacks/162775.html#include<stdio.h>
#include
<string.h>
 
int main()
{
    FILE 
* handle;
    
char con[100];
    
//絎竴縐嶄嬌鐢╢open鐨勬柟寮忥紝windows緋葷粺鏄洿鎺ヨ緭鍏ユ枃浠剁殑緇濆璺緞闇瑕佽繖縐嶆柟寮?e:\\aaa.txt",娉ㄦ剰鏄袱涓弽鏂滄潬錛屼竴涓弽鏂滄潬鐨勮瘽灝遍敊浜?br />    //handle=fopen("e:\aaa.txt","r");

    
//絎簩縐嶄嬌鐢╢open鐨勬柟寮忥紝鍒╃敤涓涓瓧絎︿覆鏉ヤ繚瀛樻枃浠惰礬寰勫拰鍚嶅瓧錛岃繍琛岀▼搴忓悗錛屽湪dos涓嬫彁紺轟綘杈撳叆璺緞鍚嶅瓧錛屽彲浠ヨ緭鍏?e:\\aaa.txt"錛?br />    //鎴栬?e:\aaa.txt"錛屼篃灝辨槸璇磀os涓嬩竴涓弽鏂滄潬鎴栬呬袱涓弽鏂滄潬閮芥槸姝g‘鐨?br />    //char buf[80];
    
//printf("please input the filename you want to open:");
    
//gets(buf);
    
//handle=fopen(buf,"r");

    
//鍒╃敤涓涓垵濮嬪寲濂界殑瀛楃涓蹭篃鍙互姝g‘鐨勪嬌鐢╢open錛屼互涓嬭繖鍑犵鍒濆鍖栨柟寮忛兘鏄紜殑閮芥槸涓や釜鍙嶆枩鏉?br />    //char buf[]="e:\\aaa.txt";const char buf[100]="e:\\aaa.txt";
    char *buf="e:\\aaa.txt";
    handle
=fopen(buf,"r");

    
if(!handle)
        perror(
"can not open this file\n");
    
else
        printf(
"you have opened this file successfully!\n");
    fgets(con,
100,handle);
    printf(
"the content of file is:%s\n",con);
    fclose(handle);
    
return 0;
}

涓昏浠嬬粛浜唂open鍑芥暟鐨勭涓涓弬鏁扮殑浣跨敤錛屼唬鐮侀噷闈㈣鐨勫凡緇忓緢娓呮浜嗭紝鍏朵綑綾諱技fopen鐨勫嚱鏁扮殑浣跨敤涔熶竴鏍?img src ="http://www.shnenglu.com/gujiayue/aggbug/162775.html" width = "1" height = "1" />

鍙ゆ湀 2011-12-25 14:08 鍙戣〃璇勮
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linux鐜涓嬭皟璇曟湁鍏蟲秹鍙婂埌鏉′歡緙栬瘧鐨刢紼嬪簭鐨勫皬鐢ㄦ硶http://www.shnenglu.com/gujiayue/archive/2011/09/14/155793.html鍙ゆ湀鍙ゆ湀Wed, 14 Sep 2011 15:56:00 GMThttp://www.shnenglu.com/gujiayue/archive/2011/09/14/155793.htmlhttp://www.shnenglu.com/gujiayue/comments/155793.htmlhttp://www.shnenglu.com/gujiayue/archive/2011/09/14/155793.html#Feedback0http://www.shnenglu.com/gujiayue/comments/commentRss/155793.htmlhttp://www.shnenglu.com/gujiayue/services/trackbacks/155793.html1 #if 琛ㄨ揪寮?br />       紼嬪簭孌?
  #else
       紼嬪簭孌?
 #endif
   寰堢畝鍗曪紝琛ㄨ揪寮忎負鐪熺紪璇?錛屽惁鍒欑紪璇?銆?br />
2 #ifdef 鏍囪瘑絎?br />      紼嬪簭孌?
   #else
      紼嬪簭孌?
   #endif
濡傛灉鏍囪瘑絎﹀凡鐢?define瀹氫箟榪囷紝鍒欎負鐪熺紪璇?錛屽惁鍒欑紪璇?

3 鍜?鐨勫熀鏈竴鑷村氨鏄妸ifdef鎹㈡垚ifndef銆傜敤娉曟槸涓哄亣緙栬瘧1錛屽惁鍒?

姣斿#include <stdio.h>
int main()
{
#ifdef _DEBUG
printf("hello world\n");
#else
printf("no debug");
#endif
return 0;
}

鍦╨inux鐢╣cc緙栬瘧鏄紝濡傛灉浣跨敤gcc -D_DEBUG -o main main.c銆傚垯灝辨槸璇存槑瀹氫箟榪嘷DEBUG錛岃繍琛岀粨鏋滄槸hello world銆傛敞鎰忔槸-D閫夐」錛?D鍚庨潰绱ц窡鐫鏍囪瘑絎﹀悕瀛?br />濡傛灉浣跨敤錛歡cc -o main mian.c錛屾庤鏄庢病鏈夊畾涔夋爣璇嗙錛岃繍琛岀粨鏋滄槸no debug浜嗐?br />
褰撶劧錛屼篃鍙互鐩存帴鍐嶄唬鐮侀噷鏄劇ず鍐欎笂涓鍙ワ細#define _DEBUG,涔熻兘鏈夌浉鍚屾晥鏋溿?br />


鍙ゆ湀 2011-09-14 23:56 鍙戣〃璇勮
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瀹忓畾涔夌殑鐢ㄦ硶璇﹁Вhttp://www.shnenglu.com/gujiayue/archive/2011/09/14/155791.html鍙ゆ湀鍙ゆ湀Wed, 14 Sep 2011 15:42:00 GMThttp://www.shnenglu.com/gujiayue/archive/2011/09/14/155791.htmlhttp://www.shnenglu.com/gujiayue/comments/155791.htmlhttp://www.shnenglu.com/gujiayue/archive/2011/09/14/155791.html#Feedback0http://www.shnenglu.com/gujiayue/comments/commentRss/155791.htmlhttp://www.shnenglu.com/gujiayue/services/trackbacks/155791.html
1銆佷笉甯﹀弬鏁扮殑瀹忓畾涔?br />
  榪欐槸鏈綆鍗曠殑浜嗭紝姣斿#define PI 3.1415926
棰勭紪璇戠殑鏃跺欙紝鎶婁唬鐮佷腑鐨凱I鏇挎崲灝辮浜嗐備竴鑸儏鍐典笅瀹忓悕鐢ㄥぇ鍐欏瓧姣嶏紝涓嶈鍦ㄨ鏈姞鍒嗗彿銆?br />
2銆佸甫鍙傛暟鐨勫畯瀹氫箟

涓嶅彧鏄繘琛屽畯浣撶殑鏇挎崲錛岃繕瑕佽繘琛屽弬鏁扮殑鏇挎崲銆?br />姣斿錛?define MAX(x錛寉錛?錛坸>y)?x:y
瀹忓睍寮鐨勬椂鍊欒灝嗚鍙ヤ腑瀹忓悕鍚庨潰鐨勬嫭鍙峰唴鐨勫疄鍙備唬鏇垮艦鍙傘傚彟澶栦負浜嗛伩鍏嶅彂鐢熼敊璇紝鍑℃槸甯﹁繍綆楃鐨勫弬鏁拌鐢ㄥ渾鎷彿鎷搗鏉ャ?br />
3銆佷笉甯歌浣嗘槸寰堥噸瑕佺殑鐢ㄦ硶
(1)#define FUN(a) "a"
閭d箞褰撹緭鍏UN(345)鏄紝鐓ф牱浼氳鏇挎崲鎴?#8220;a”錛屾棤璁哄畯鐨勫疄鍙傛槸浠涔堬紝閮戒笉浼氬獎鍝嶅叾琚浛鎹㈡垚"a"鐨勫懡榪愩?
銆銆涔熷氨鏄錛?"鍐呯殑瀛楃涓嶈褰撴垚褰㈠弬錛屽嵆浣垮畠鍜屼竴妯′竴鏍楓?br />(2)鏈夊弬瀹忓畾涔変腑#鐨勭敤娉?
銆#define STR(str) #str
銆銆str鍓嶉潰鐨勯偅涓?鐢ㄤ簬鎶婂畯瀹氫箟涓殑鍙傛暟涓ょ鍔犱笂瀛楃涓茬殑""
 姣斿浠g爜涓湁STR(my#name),閭d箞鍦ㄥ睍寮鐨勬椂鍊欒鏇挎崲鎴?my#name"銆?br />涓鑸敱浠繪剰瀛楃閮藉彲浠ュ仛褰㈠弬錛屼絾浠ヤ笅鎯呭喌浼氬嚭閿欙細
銆銆STR())榪欐牱錛岀紪璇戝櫒涓嶄細鎶?#8220;)”褰撴垚STR()鐨勫弬鏁般?
銆銆STR(,)鍚屼笂錛岀紪璇戝櫒涓嶄細鎶?#8220;,”褰撴垚STR鐨勫弬鏁般?
銆銆STR(A,B)濡傛灉瀹炲弬榪囧錛屽垯緙栬瘧鍣ㄤ細鎶婂浣欑殑鍙傛暟鑸嶅幓銆傦紙VC++2008涓轟緥錛?
銆銆STR((A,B))浼氳瑙h涓哄疄鍙備負錛?A,B)錛岃屼笉鏄瑙h涓轟袱涓疄鍙傦紝絎竴涓槸(A絎簩涓槸B)銆?

(3) 鏈夊弬瀹忓畾涔変腑##鐨勭敤娉?
#define WIDE(str) L##str
銆銆鍒欎細灝嗗艦鍙俿tr鐨勫墠闈㈠姞涓奓
銆銆姣斿錛歐IDE("abc")灝變細琚浛鎹㈡垚L"abc"
銆銆濡傛灉鏈?define FUN(a,b) vo##a##b()
銆銆閭d箞FUN(id ma,in)浼氳鏇挎崲鎴恦oid main()
鍐嶆瘮濡傦細
#define s5(a) supper_ ## a
#include <stdio.h>
void supper_printf(const char* p )
{
printf("this is supper printf:\n%s\n",a);
}

int main()
{
s5(printf)("hello owrld");//灝辨槸璋冪敤鍑芥暟supper_printf.
return 0;
}
(4) 澶氳瀹忓畾涔夛細
銆銆#define doit(m,n) for(int i=0;i<(n);++i)\
銆銆{\
銆銆m+=i;\
銆銆}
鍏抽敭鏄鍦ㄦ瘡涓涓崲琛岀殑鏃跺欏姞涓婁竴涓?"\ " ,鏈鍚庝竴琛屼笉鐢ㄥ姞銆傝繖鏍蜂嬌鐢ㄧ殑鏃跺欏氨鍙互鐢╠oit錛坢錛宯錛夋潵浠f浛for寰幆緇撴瀯浜嗐?br />

鍙ゆ湀 2011-09-14 23:42 鍙戣〃璇勮
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青青草原综合久久大伊人导航_色综合久久天天综合_日日噜噜夜夜狠狠久久丁香五月_热久久这里只有精品
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