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¤È¤¹¤ë¤Èint·¿ÊÑ¿ô¤Î¥µ¥¤¥ºÊ¬¥á¥â¥êÎΰ褬³ÎÊݤµ¤ì¤Þ¤¹ ưŪ¤Ë³ÎÊݤ·¤¿¥á¥â¥ê¤Ïɬ¤º²òÊü¤·¤Ê¤±¤ì¤Ð¤Ê¤ê¤Þ¤»¤ó ²òÊü¤¹¤ë¤¿¤á¤Ë¤Ï delete¥¡¼¥ï¡¼¥É¤ò»È¤¤¤Þ¤¹ ¤³¤ì¤ÏÊÑ¿ô¤Î·¿¤Ë¤è¤é¤º delete a;//¢«a¤ÏǤ°Õ¤ÎÊÑ¿ô·¿¤Î¥Ý¥¤¥ó¥¿ ¤Ç²òÊü¤Ç¤¤Þ¤¹ ÇÛÎó¤Ç¤âưŪ¤Ê¥á¥â¥ê¤Ï³ÎÊݤǤ¤Þ¤¹ int·¿¤Î¥Ç¡¼¥¿¤ò100¸Ä¤â¤ÄÇÛÎó¤òºî¤ê¤¿¤¤¾ì¹ç¤Ï int *a = new int[100]; ÇÛÎó¤Î¾ì¹ç¤Î²òÊü¤Ï delete[] a;//¢«a¤ÏǤ°Õ¤ÎÊÑ¿ô·¿¤Î¥Ý¥¤¥ó¥¿ ¤Ç¹Ô¤¤¤Þ¤¹ »È¤¤½ª¤ï¤Ã¤¿¤éɬ¤ºnew¤·¤¿¥á¥â¥ê¤Ïdelete¡¢delete[]¤Ç²òÊü¤ò¤·¤Æ¤¯¤À¤µ¤¤ ¤³¤ì¤ò¹Ô¤ï¤Ê¤¤¤È¥×¥í¥°¥é¥à½ªÎ»»þ¤Ë¥á¥â¥ê¤¬²òÊü¤µ¤ì¤º ¥×¥í¥°¥é¥à¤òµ¯Æ°¤´¤È¤Ë»È¤¨¤ë¥á¥â¥êÎΰ褬¸º¤Ã¤Æ¤¤¤¤Þ¤¹ ¡Ê¥á¥â¥ê¥ê¡¼¥¯¤È¤¤¤¦¡Ë Æä˷ÈÂÓÅÅÏäʤɥá¥â¥ê»ÈÍѤ¬¸Â¤é¤ì¤Æ¤¤¤ë´Ä¶¤Ç¤³¤ì¤ò¤ä¤ë¤ÈÃ×̿Ū¤Ç¤¹ ¥×¥í¥°¥é¥à¤òµ¯Æ°¤·Â³¤±¤ë¤È¥á¥â¥êÍÆÎ̤¬¤Ê¤¯¤Ê¤ê¡¢¥×¥í¥°¥é¥à¤¬»ß¤Þ¤ë¤³¤È¤Ë¤Ê¤ê¤Þ¤¹ ¥á¥â¥ê¤Ï»ñ¸»¤À¤È¤¤¤¦Ç§¼±¤ò¾ï¤ËƬ¤Ë¤¤¤ì¤Æ¤ª¤¤¤Æ¤¯¤À¤µ¤¤ ¤³¤³¤Ç¤Ï¤È¤ê¤¢¤¨¤º¡¢ÇÛÎó¤ÎưŪ³ÎÊݤˤĤ¤¤ÆÀâÌÀ¤·¤Þ¤¹ ñÂΤǥá¥â¥ê³ÎÊݤ·¤Æ¤¤¤¯¤Î¤Ï¥ê¥¹¥È¤äÌڤʤɤΥǡ¼¥¿¹½Â¤¤ËÍѤ¤¤é¤ì¤ë¤Î¤Ç¤¹¤¬¡¢ ¤½¤ì¤Ë¤Ä¤¤¤Æ¤Ï²¶¤Î;ÎϤ¬¤¢¤Ã¤¿¤é¤¤¤Ä¤«ÀâÌÀ¤·¤Þ¤¹ #include <iostream> using namespace std; int main() { // int·¿¥Ý¥¤¥ó¥¿ int *memory; // int·¿¤òÇÛÎó¤Ç100¸Äʬ³ÎÊÝ memory = new int[100]; for(int i = 0;i < 100;++i) { memory[i] = i; cout << memory[i] << endl; } // »È¤ï¤Ê¤¯¤Ê¤Ã¤¿¤ê¡¢ºÆ³ÎÊݤ·¤¿¤«¤Ã¤¿¤ê¤¹¤ë¾ì¹ç¤Ïɬ¤º¥á¥â¥ê²òÊü delete[] memory; // int·¿¤òÇÛÎó¤Ç200¸Äʬ³ÎÊÝ memory = new int[200]; for(int i = 0;i < 200;++i) { memory[i] = i; cout << memory[i] << endl; } // »È¤ï¤Ê¤¯¤Ê¤Ã¤¿¤ê¡¢ºÆ³ÎÊݤ·¤¿¤«¤Ã¤¿¤ê¤¹¤ë¾ì¹ç¤Ïɬ¤º¥á¥â¥ê²òÊü delete[] memory; return 0; } new¥¡¼¥ï¡¼¥É¤ÎÍøÅÀ¤Ï£Ã¸À¸ì¤Ç¤Îmalloc´Ø¿ô¤È°ã¤¤ ¥á¥â¥êÎΰè³ÎÊݤΤ¿¤á¤Î¥Ç¡¼¥¿·¿¤Î¥µ¥¤¥º¤ò¤¤¤Á¤¤¤ÁÄ´¤Ù¤Ê¤¯¤Æ¤¤¤¤ÅÀ¤Ç¤¹ ¤Þ¤¿¡¢malloc´Ø¿ô¤Ç³ÎÊݤ¹¤ë¤È¤¤Ï¥¯¥é¥¹¤Î¥³¥ó¥¹¥È¥é¥¯¥¿¤Ï¸Æ¤Ð¤ì¤Þ¤»¤ó¡Ê¢«½ÅÍסª¡ª¡Ë ¤è¤Ã¤Æ£Ã¡Ü¡Ü¤Ç¤Ï¡Ê¥¯¥é¥¹¤ò»È¤¦¤Î¤Ç¡Ënew¤Ç¥á¥â¥ê¤ÎưŪ³ÎÊݤ¹¤ëÊʤò¤Ä¤±¤Þ¤·¤ç¤¦ ¡Ê¤ª·»¤µ¤ó¤È¤ÎÌó«¤À¤¾¡ù¡Ë £Ã¡Ü¡Ü¤Ë¤Ï¤³¤ì¤È¤ÏÊ̤Ëvector¤È¤¤¤¦²ÄÊÑĹÇÛÎó¤Î¥Æ¥ó¥×¥ì¡¼¥È¥¯¥é¥¹¤ò»È¤¦ÊýË¡ ¤¬¤¢¤ê¤Þ¤¹¤¬¡¢ÇÛÎó¤ÎưŪ³ÎÊݤϥե¡¥¤¥ëÆɤ߹þ¤ß¤È¤«¤Ç ɬÍפʥǡ¼¥¿¿ô¤¬¥Õ¥¡¥¤¥ë¤Ë¤è¤Ã¤Æ°Û¤Ê¤ë¾ì¹ç¤È¤«½ÅÊõ¤·¤Þ¤¹ ¤µ¤Æ¡¢¤³¤³¤Ç ¥á¥â¥êÎΰè¤òÅÓÃæ¤ÇÁýÀߤ·¤¿¤¤¤Ê¤È»×¤¦¤È¤¤¬¤¢¤ê¤Þ¤¹¡£ ¤·¤«¤â¤è¤¯¹Í¤¨¤ë¤Î¤¬ÇÛÎó¤ß¤¿¤¤¤ËϢ³¤Ç³ÎÊݤǤ¤Ê¤¤¤«¤Ê¤¡¡¦¡¦¡¦ ¤ß¤¿¤¤¤Ê¤³¤È¤Ç¤¹¡£ Ϣ³¤Ç³ÎÊݤ·¤¿¤¤Íýͳ¤È¤·¤Æ¤Ï¡¢ ÇÛÎó¤ÎÍøÅÀ¤Ç¤¢¤ëź¤¨»ú¤Ç1ȯ¤Ç¥¢¥¯¥»¥¹¤Ç¤¤ë¤È¤¤¤¦ÍøÅÀ¤òÀ¸¤«¤·¤¿¤¤¤È¤¤¤¦¤³¤È¤Ç¤¹¡£ ¡Êforʸ¤Ê¤É¤Ç·«¤êÊÖ¤·½èÍý¤µ¤»¤¿¤¤¤Ê¤¡¤È»×¤¦¤È¤¤â¤¢¤ë¤Ç¤·¤ç¤¦¤·¡¦¡¦¡¦¡Ë £Ã¸À¸ì¤Ç¤Ïrealloc´Ø¿ô¤È¤¤¤¦ÊØÍø¤Ê´Ø¿ô¤Ç ¸½¾õ¤ÎưŪ¥á¥â¥êÎΰè¤Î¥Ç¡¼¥¿¤ò°Ý»ý¤·¤¿¤Þ¤Þ¡¢Ï¢Â³¤Ç¥á¥â¥ê¤òÁýÀߤµ¤»¤ë¤³¤È¤¬¤Ç¤¤Þ¤·¤¿¡£ ¤·¤«¤·¡¢£Ã¡Ü¡Ü¸À¸ì¤Ë¤Ïrenew¤Ê¤É¤È¤¤¤¦¥¡¼¥ï¡¼¥É¤ä´Ø¿ô¤Ï¸ºß¤·¤Þ¤»¤ó¡£ ¤Ç¤Ï¤É¤¦¤¹¤ë¤«¤È¤¤¤¦¤È¡¢ ¸½¾õ¤ÎưŪ¥á¥â¥êÇÛÎó¤ÈÊ̤˳ÈÄ¥¸å¤ÎưŪ¥á¥â¥êÇÛÎó¤òÍÑ°Õ¤· memcpy´Ø¿ô¤Ç°Ü¿¢¤·¤Þ¤¹¡£ int *data = new int[100]; //¤Ê¤ó¤«data¤ËŬÅö¤Ê¥Ç¡¼¥¿¤ò¤¤¤ì¤ë½èÍý¸å // data¤ÈÊ̤ËưŪÇÛÎó¤ò³ÎÊÝ int *temp = new int[200]; memcpy(temp,data,sizeof(int) * 100); // ¥³¥Ô¡¼¤·½ª¤ï¤Ã¤¿¤é¸µ¤ÎưŪÇÛÎó¤Ï¤¤¤é¤Ê¤¤ delete[] data; // ½ªÎ»½èÍý delete[] temp; ¤Ï¤¤¡¢Èó¾ï¤Ë¤á¤ó¤É¤¯¤µ¤¤¤Ç¤¹¤Í¡Ê¡¦¦Ø¡¦`¡Ë ¤½¤ì¤Ë¤É¤ÎÄøÅÙ¤ÎÎ̤Υá¥â¥ê¤òºÆ³ÎÊݤ·¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¤Î¤« ¤ï¤«¤é¤Ê¤¤¾ì¹ç¤È¤¤¤¦¤Î¤¬Â¿¡¹¤¢¤ê¤Þ¤¹ ¤³¤³¤Ç²ÄÊÑĹÇÛÎ󥯥饹¤È¤¤¤¦¤â¤Î¤¬¤¢¤ê¤Þ¤¹ vector¥¯¥é¥¹¤È¸Æ¤Ð¤ì¤ë¤â¤Î¤Ç (Äɵ¡§¤ä¤Ã¤Æ¤ë¤³¤È¤Ï¾åµ¤Î¤è¤¦¤Ê¥á¥â¥êºÆ³ÎÊݤòÆâÉô¤Ç¼«Æ°¤Ç¤ä¤Ã¤Æ¤¯¤ì¤Æ¤Þ¤¹) ¤É¤ó¤Ê·¿¤Ç¤â¥Æ¥ó¥×¥ì¡¼¥È¤È¸Æ¤Ð¤ì¤ëµ¡Ç½¤Ë¤è¤ê³ÊǼ¤Ç¤¤ë²ÄÊÑĹÇÛÎ󥯥饹¤Ç ¥¹¥¿¥Ã¥¯¤ä¥¥å¡¼¤ß¤¿¤¤¤ËÃ༡¥Ç¡¼¥¿¤òϢ³¤ÇµÍ¤á¤Æ¤¤¤¯¤³¤È¤¬¤Ç¤¤Þ¤¹ »È¤¤Êý¤Ï¼¡¤Î¥½¡¼¥¹¥³¡¼¥É¤Ë¼¨¤·¤Þ¤¹ vector¥Ø¥Ã¥À¡¼¤ò¥¤¥ó¥¯¥ë¡¼¥É¤·¤Þ¤¹ #include <iostream> #include <vector> using namespace std; class Myclass { public: int number; }; int main() { // int·¿¤Î²ÄÊÑĹÇÛÎó¤ÎÀë¸À vector<int> ArrayInt; // ²ÄÊÑĹÇÛÎó¤Ë¥Ç¡¼¥¿¤òÂåÆþ for(int i = 0;i < 100;++i) { // ÇÛÎó¤Î¸å¤í¤ÎÍ×ÁǤòÀ¸À®¤·¡¢int·¿¥Ç¡¼¥¿¤òµÍ¤á¤Æ¤¤¤¯ ArrayInt.push_back(i); } // À¸À®¸å¤Î²ÄÊÑĹÇÛÎó¤Î»È¤¤Êý¤ÏÉáÄ̤ÎÇÛÎó¤ÈƱ¤¸ // ArrayInt.size()¤Ç²ÄÊÑĹÇÛÎó¤ÎÍ×ÁÇ¿ô¤¬¤ï¤«¤ë for(unsigned int i = 0;i < ArrayInt.size();++i) { cout << ArrayInt[i] << endl; } cout << endl; // Myclass·¿¤Î²ÄÊÑĹÇÛÎó¤ÎÀë¸À vector<Myclass> ArrayMyclass; // ²ÄÊÑĹÇÛÎó¤Ë¥Ç¡¼¥¿¤òÂåÆþ for(unsigned int i = 0;i < 100;++i) { Myclass temp; temp.number = i * 2; // ÇÛÎó¤Î¸å¤í¤ÎÍ×ÁǤòÀ¸À®¤·¡¢Myclass·¿¥Ç¡¼¥¿¤òµÍ¤á¤Æ¤¤¤¯ ArrayMyclass.push_back(temp); } for(unsigned int i = 0;i < 100;++i) { cout << ArrayMyclass[i].number << endl; } return 0; } ¤Ê¤ª¡¢ºÇ½é¤«¤éÇÛÎó¤Î¸Ä¿ô¤¬Ê¬¤«¤Ã¤Æ¤¤¤ë¾ì¹ç¤Ï // int·¿¤Î²ÄÊÑĹÇÛÎó¤ÎÀë¸À»þ¤Ë100¸ÄÍÑ°Õ¤¹¤ë vector<int> ArrayInt(100); ArrayInt[99] = 10; ¤â¤·¤¯¤Ïresize¥á¥½¥Ã¥É¤ò»È¤¤ // int·¿¤Î²ÄÊÑĹÇÛÎó¤ÎÀë¸À vector<int> ArrayInt; // resize¥á¥½¥Ã¥É¤Ç100¸Ä³ÎÊÝ ArrayInt.resize(100); ArrayInt[99] = 10; ¤Î¤è¤¦¤Ë¤ä¤ì¤Ðnew[]¤ÎÇÛÎó¤ß¤¿¤¤¤ËưŪ³ÎÊݤ¹¤ë¤³¤È¤¬¤Ç¤¤Þ¤¹ ¤µ¤é¤Ëvector¤Ï¼«Æ°Åª¤ËÇË´þ¤·¤Æ¤¯¤ì¤ë¤Î¤Ç delete[]¤ò¤¹¤ëɬÍ×À¤â¤¢¤ê¤Þ¤»¤ó ¼ã´³¹âÅù¤Ê¤ªÏ᧠pushback¤ÇÇÛÎó¤ËµÍ¤á¤ëÁ°¤Ë Í×ÁÇ¿ô¤¬¤¢¤ëÄøÅ٤狼¤Ã¤Æ¤¤¤ë¾ì¹ç¤Ï reserve¥á¥½¥Ã¥É¤Ç»È¤¦¸Ä¿ô¤òͽÌ󤹤ë¤È¤¤¤¤¤Ç¤¹¡Ê¤³¤Î»þÅÀ¤Ç¤Ï¤Þ¤À³ÎÊݤ·¤Æ¤Ê¤¤¡Ë ¤È¤¤¤¦¤Î¤Ïvector¥¯¥é¥¹¤Ïpushback¤¹¤ë¤¿¤Ó¤Ë¤¢¤é¤«¤¸¤áÍÑ°Õ¤·¤Æ¤¤¤¿¥á¥â¥êÎΰ褬¤ê¤Ê¤«¤Ã¤¿¾ì¹ç ÆâÉôŪ¤Ënew,delete¤ò¹Ô¤Ã¤Æ¤¤¤ë¤«¤é¤Ç¤¹ ÉÑÈˤËnew¤¹¤ë¤È¥á¥â¥ê¤Ë·ä´Ö¤¬¶õ¤¤¤Æ¤·¤Þ¤¦¡ÊÃÇÊÒ²½¤·¤Æ¤·¤Þ¤¦¡Ë¤Î¤Ç¤è¤í¤·¤¯¤¢¤ê¤Þ¤»¤ó ¡Ênew¤Ç¥á¥â¥ê¤ò³ÎÊݤ¹¤ë¤È¤¤¤¦½èÍý¼«ÂΤâÃÙ¤¤¡Ë »È¤¦¸Ä¿ô¤¬¤¢¤é¤«¤¸¤á²¿¸Ä°Ê¾å¤È¤ï¤«¤Ã¤Æ¤¤¤ë¾ì¹ç¤Ï ÆâÉôŪ¤Ê¥á¥â¥ê³ÎÊݤβó¿ô¤ò¸º¤é¤¹¤³¤È¤¬Âç»ö¤Ç¤¹ »È¤¤Êý¤Ï100¸Ä°Ê¾å»È¤¦¤³¤È¤¬¤¢¤é¤«¤¸¤á¤ï¤«¤Ã¤Æ¤¤¤ë¾ì¹ç pushback¤ÎÁ°¤Ë ArrayInt.reserve(100); ¤È¤·¤Þ¤¹¡£ ¤ª¤Þ¤±¡§ £Ã¡Ü¡Ü¡¢£Ã¸À¸ì¤Çfor¥ë¡¼¥×¤Ê¤É¤Ç ÇÛÎó¤ÎÍ×ÁÇ¿ô¤òÃΤꤿ¤¤¤È»×¤¦¤³¤È¤¬Â¿¡¹¤¢¤ë¤È»×¤¤¤Þ¤¹ ¤½¤ó¤Ê¾ì¹ç¤Ï¼¡¤Î¤è¤¦¤Ê¥Þ¥¯¥í´Ø¿ô¡Ê´Ê°×´Ø¿ô¡Ë¤ò ¥×¥í¥°¥é¥à¤ÎÀèƬ¤Ë½ñ¤¯¤Î¤ò¤ª¥¹¥¹¥á¤·¤Þ¤¹ #define LENGTH(p) (sizeof(p))/(sizeof(p[0])) //¡¡§ÇÛÎó¤ÎÍ×ÁÇ¿ô #define LENGTHMEM(p) (_msize(p)) / (sizeof(p[0])) //¢¡§Æ°ÅªÇÛÎó¤ÎÍ×ÁÇ¿ô »È¤¤Êý¤Ïforʸ¤Ê¤É¤Ç // Ä̾ï¤ÎÇÛÎó int a[10]; for(unsigned int i = 0;i < LENGTH(a);++i) { // ½èÍý } // ưŪ³ÎÊݤ·¤¿ÇÛÎó int *b = new int[20]; for(unsigned int i = 0;i < LENGTHMEM(b);++i) { // ½èÍý } delete[] b; ¤È¤¹¤ì¤Ð¡¢¥Þ¥¯¥í´Ø¿ô¤ÇÍ×ÁÇ¿ô¤¬¤ï¤«¤ë¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤Þ¤¹ ¡ÊÃí°Õ¡§_msize¤ÏưŪ¤Ê¥¯¥é¥¹ÇÛÎó¤Ë¤Ï»È¤¨¤Þ¤»¤ó¡Ë ¤µ¤é¤Ë¡¢¤ª¤Þ¤± ¥á¥â¥ê¥ê¡¼¥¯¤Î¸¡½ÐÊýË¡ ÃΤé¤Ê¤¤¿Í¤Ïɬ¿Ü¤Î¾ðÊó ¥á¥â¥ê¥ê¡¼¥¯¡ÊưŪ³ÎÊݤ·¤Æ²òÊü¤·¤Æ¤Ê¤¤¥á¥â¥ê¡Ë¤ò¸¡½Ð¤¹¤ë¤Ë¤Ï ¤Þ¤º¡¢ #include <crtdbg.h> // ¥á¥â¥ê¥ê¡¼¥¯¸¡½Ð ¤ò¥¤¥ó¥¯¥ë¡¼¥É¤·¤Þ¤¹¡¢¤³¤Î¥Ø¥Ã¥À¡¼<crtdbg.h>¤Ï ¥Ç¥Ð¥Ã¥¯¥â¡¼¥É¤Ç¤·¤«»È¤¨¤Þ¤»¤ó ¥Ç¥Ð¥Ã¥¯¥â¡¼¥É¤Ï¼Â¹Ô¥Õ¥¡¥¤¥ë½ÐÎϤΥӥë¥É·Á¼°¤òDebug¤Î¾õÂÖ¤ÇF5¥¡¼¤ò²¡¤·¤Þ¤¹ #ifdef _DEBUG _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF); 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