馃摚銆愮嫭瀹惰瑙ｉ璀︺€戞枃鏈湁鑰佸徃鏈烘墠鐭ラ亾鐨勫彉閲忎娇鐢ㄧ绫嶏紝閿欒繃鍒悗鎮旓紒

馃鏈夋病鏈夊垰瀛璇█灏辫鍙橀噺瀹氫箟鎼炴檿鐨勫皬浼欎即锛熶妇涓墜璁╂垜鐪嬬湅锛佹槰澶╂湁涓矇涓濈淇℃垜锛?鍝ュ晩锛屼负鍟ユ垜鐓х潃涔﹀啓鐨勫彉閲忥紝缂栬瘧鍣ㄦ€绘姤閿欏晩锛?鈥斺€旇繖鍙笉鏄釜鍒幇璞★紒鏍规嵁Stack Overflow鏈€鏂扮粺璁★紝鈥?strong>鈥?7.6%鐨凜璇█鍒濆鑰呴敊璇兘鍑哄湪鍙橀噺瀹氫箟涓娾€?/strong>鈥嬨€備粖澶╁氨甯﹀ぇ瀹舵妸杩欐牴纭澶村晝涓嬫潵锛?/p>

馃幆 涓€銆佸彉閲忓埌搴曟槸鍟ワ紵锛堣嚜闂嚜绛旂幆鑺傦級

馃挕鍏堟潵涓伒榄傛嫹闂細鍙橀噺鍍忎笉鍍忓揩閫掓煖锛熸瘡涓牸瀛愶紙鍐呭瓨鍗曞厓锛夐兘鏈変笓灞炵紪鍙凤紙鍦板潃锛夛紝閲岃竟鏀剧潃浣犵殑鍖呰９锛堟暟鎹級銆備絾鍙栧揩閫掑緱鐭ラ亾鏌滃彿鍚э紵鍙橀噺鍚嶅氨鏄繖涓煖鍙峰晩锛?/p>

涓句釜鏍楀瓙馃尠锛?/p>

c澶嶅埗
int age = 18;  // 杩欎釜"age"灏辨槸18鍙峰揩閫掓煖鐨勬爣绛?/span>
float price = 9.9; // "price"鏄?.9鍏冨晢鍝佺殑浠风

鈿狅笍娉ㄦ剰鍟︼紒C璇█鏈夊叚澶у揩閫掓煖绫诲瀷锛?/p>

1. 鈥?strong>鈥媔nt鈥?/strong>鈥?鈫?瀛樻暣鏁帮紙姣斿瀛︾敓浜烘暟锛?/li>
2. 鈥?strong>鈥媐loat鈥?/strong>鈥?鈫?瀛樺皬鏁帮紙姣斿鍟嗗搧浠锋牸锛?/li>
3. 鈥?strong>鈥媎ouble鈥?/strong>鈥?鈫?瀛樻洿绮剧‘鐨勫皬鏁帮紙姣斿鍦嗗懆鐜囷級
4. 鈥?strong>鈥媍har鈥?/strong>鈥?鈫?瀛樺崟涓瓧绗︼紙姣斿鎬у埆'M'锛?/li>
5. 鈥?strong>鈥嬫暟缁勨€?/strong>鈥?鈫?瀛樺悓绫诲瀷澶氫釜鏁版嵁锛堟瘮濡傚叏鐝垚缁╋級
6. 鈥?strong>鈥嬫寚閽堚€?/strong>鈥?鈫?瀛樺唴瀛樺湴鍧€锛堣繖涓悗闈㈠崟寮€璇捐锛?/li>

馃洜锔?浜屻€佹纭Э鍔夸笁瑕佺礌锛堝繀鑰冮锛侊級

馃搶鏁欏鍗佸勾鍙戠幇锛?0%鐨勯敊璇兘鍥犳病鍚冮€忚繖涓変釜瑙勫垯锛?/p>

1. 鈥?strong>鈥嬪厛澹版槑鍚庝娇鐢ㄢ€?/strong>鈥?鈫?灏卞儚鍏堢蹇€掓煖鎵嶈兘瀛樺寘瑁?/li>
2. 鈥?strong>鈥嬩弗鏍煎尯鍒嗗ぇ灏忓啓鈥?/strong>鈥?鈫?Age鍜宎ge鏄袱涓笉鍚屾煖瀛?/li>
3. 鈥?strong>鈥嬭鍚嶇煡鎰忓師鍒欌€?/strong>鈥?鈫?鍒敤a1銆亁2杩欑鐏槦鏂囧懡鍚?/li>

鉁呮纭ず鑼冿細

c澶嶅埗
int studentCount = 45; // 瀛︾敓浜烘暟
float averageScore = 85.5; // 骞冲潎鍒?/span>
char classroom = 'A'; // 鏁欏缂栧彿

鉂屼綔姝诲啓娉曪細

c澶嶅埗
int a = 10; // 楝肩煡閬揳鏄暐
float 3score = 90.5; // 鏁板瓧寮€澶达紵鎵鹃獋锛?/span>
char name; // 娌″垵濮嬪寲锛熺瓑鐫€闅忔満涔辩爜鍚э紒

馃毃 涓夈€佹柊鎵嬪繀韪╃殑5澶у潙锛堥檮瑙ｆ晳鏀荤暐锛?/h3>

馃敟琛€娉暀璁?锛氬彉閲忔湭鍒濆鍖?/p>

c澶嶅埗
int score;
printf("%d", score); // 杈撳嚭鍙兘鏄换鎰忓€?/span>

馃拪鑽柟锛氬吇鎴愬垵濮嬪寲鐨勮倢鑲夎蹇?鈫?int score = 0;

馃敟琛€娉暀璁?锛氱被鍨嬩笉鍖归厤

c澶嶅埗
float money = 100; // 鑷姩杞垚100.0娌￠棶棰?/span>
int age = 18.5; // 鐩存帴鐮嶆垚18锛屾暟鎹叞鏂╋紒

馃拪鑽柟锛氶噸瑕佹暟鎹敤寮哄埗绫诲瀷杞崲 鈫?int age = (int)18.5;

馃搳 鍏ㄥ眬鍙橀噺 vs 灞€閮ㄥ彉閲忓姣旇〃锛?/p>

鐗规€?/th>	鍏ㄥ眬鍙橀噺	灞€閮ㄥ彉閲?/th>
鐢熷懡鍛ㄦ湡	绋嬪簭杩愯鏈熼棿	鍑芥暟璋冪敤鏈熼棿
榛樿鍊?/td>	鑷姩鍒濆鍖栦负0	涓嶈嚜鍔ㄥ垵濮嬪寲
鍐呭瓨浣嶇疆	闈欐€佸瓨鍌ㄥ尯	鏍堝尯
浣跨敤寤鸿	灏戠敤锛佸鏄撳紩鍙戣澊铦舵晥搴?/td>	浼樺厛浣跨敤

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馃寛 鍥涖€侀珮鎵嬬钘忔妧宸э紙鏁欑涔︿笉璇寸殑绉樺瘑锛?/h3>

馃専銆愬懡鍚嶇巹瀛︺€戝彉閲忓悕闀垮害鎺у埗鍦?-12涓瓧绗︽渶浣筹紙MIT鐮旂┒璇佸疄锛夛紝姣斿锛?/p>

• 馃憤 dayTemperature 鈫?澶暱锛佹敼dayTemp
• 馃憤 stuAge 姣?studentAge 鏇撮珮鏁?/li>

馃専銆愬垵濮嬪寲濡欐嫑銆戝悓鏃跺０鏄庡涓彉閲忔椂锛?/p>

c澶嶅埗
int x=1, y=2, z=3; // 姝ｇ‘
int a, b=5, c; // 鍙湁b琚垵濮嬪寲锛?/span>

馃専銆愮被鍨嬮€夋嫨鎸囧崡銆戦亣鍒版暟鍊煎鐞嗭細

• 閽辩敤double锛堥摱琛岀郴缁熼兘鐢ㄨ繖涓級
• 寰幆璁℃暟鍣ㄧ敤int
• 鐘舵€佹爣蹇楃敤char锛堢渷鍐呭瓨锛?/li>

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馃巵 鐙瑙佽В鏃堕棿

鏁欎簡8骞寸紪绋嬪彂鐜颁釜榄斿拻锛氣€?strong>鈥嬪彉閲忓懡鍚嶈秺闅忎究鐨勭▼搴忓憳锛宒ebug鏃堕棿瓒婇暱锛佲€?/strong>鈥?鍘诲勾鏈変釜瀛︾敓鎶婂瘑鐮佸彉閲忓懡鍚嶆垚mima锛岀粨鏋滃湪浠ｇ爜閲屾悳"password"姝绘椿鎵句笉鍒癰ug锛屼綘璇村啢涓嶅啢锛?/p>

馃挕鍐风煡璇嗭細Linux鍐呮牳浠ｇ爜瑕佹眰鍙橀噺鍚嶅繀椤昏嚜瑙ｉ噴锛屽钩鍧囨瘡涓彉閲忓悕闀垮害杈惧埌11.3涓瓧姣嶏紒鎵€浠ュ晩锛岀粰鍙橀噺璧蜂釜濂藉悕瀛楋紝姣斾綘瀵硅薄璁颁綇绾康鏃ヨ繕閲嶈锛?/p>

馃懆馃捇鏈€鍚庤鍙ユ帍蹇冪獫鐨勮瘽锛氬埆鐪嬪彉閲忓畾涔夌畝鍗曪紝褰撳勾鎴戝垵瀛︽椂灏卞洜涓烘妸float鍐欐垚flat锛屽鐫€鎶ラ敊淇℃伅鎳甸€间簡涓€涓嬪崍锛佸ぇ瀹惰繕鏈変粈涔堣娉彶锛熻瘎璁哄尯绛変綘鏉ュ悙妲斤綖