技术问答c++涓璶ew鍜宒elete鎬庝箞浣跨敤 - 扬州沐宇科技

鍦–++涓紝new鍜宒elete鏄敤鏉ュ姩鎬佸垎閰嶅拰閲婃斁鍐呭瓨鐨勬搷浣滅銆?/p>

int* p = new int; // 鍒嗛厤涓€涓猧nt绫诲瀷鐨勫唴瀛樼┖闂达紝骞跺皢鍏跺湴鍧€璧嬬粰鎸囬拡p

鍦ㄨ繖涓緥瀛愪腑锛宯ew鎿嶄綔绗︿細鍦ㄥ爢涓婂垎閰嶄竴鍧梚nt绫诲瀷澶у皬鐨勫唴瀛樼┖闂达紝骞惰繑鍥炶繖鍧楀唴瀛樼殑鍦板潃銆傜劧鍚庯紝灏嗚繖涓湴鍧€璧嬬粰鎸囬拡p锛屼娇鍏舵寚鍚戣繖鍧楀唴瀛樼┖闂淬€?/p>

濡傛灉闇€瑕佸姩鎬佸垎閰嶄竴涓暟缁勶紝鍙互浣跨敤浠ヤ笅璇硶锛?/p>

int* arr = new int[10]; // 鍒嗛厤涓€涓寘鍚?0涓猧nt鍏冪礌鐨勬暟缁?

delete p; // 閲婃斁鎸囬拡p鎵€鎸囧悜鐨勫唴瀛樼┖闂?

鍦ㄨ繖涓緥瀛愪腑锛宒elete鎿嶄綔绗︿細閲婃斁鎸囬拡p鎵€鎸囧悜鐨勫唴瀛樼┖闂达紝骞跺洖鏀惰繖鍧楀唴瀛樸€?/p>

濡傛灉鏄噴鏀惧姩鎬佸垎閰嶇殑鏁扮粍锛岄渶瑕佷娇鐢╠elete[]鎿嶄綔绗︼細

delete[] arr; // 閲婃斁鍔ㄦ€佸垎閰嶇殑鏁扮粍arr鎵€鍗犵敤鐨勫唴瀛樼┖闂?

闇€瑕佹敞鎰忕殑鏄紝浣跨敤new鎿嶄綔绗﹀垎閰嶇殑鍐呭瓨蹇呴』浣跨敤鐩稿簲鐨刣elete鎿嶄綔绗﹁繘琛岄噴鏀撅紝鍚﹀垯浼氬鑷村唴瀛樻硠婕忋€傚悓鏃讹紝delete鎿嶄綔绗﹀彧鑳介噴鏀句娇鐢╪ew鎿嶄綔绗﹀垎閰嶇殑鍐呭瓨锛屼笉鑳介噴鏀鹃潤鎬佸垎閰嶇殑鍐呭瓨鎴栬€呮爤涓婄殑鍐呭瓨銆?/p>