c delete ÎÊÌâ - C/C++ / CÓïÑÔ
C/C++ code:
void main()
{
char * lp;
lp = new CHAR[10];
strcpy(lp,"123456789");
delete lp;
lp++;
delete lp;
}
Ϊʲô»á³ö´í?
delete [] lp;
ΪʲôҪdeleteÁ½±éÄØ
void main()
{
char * lp;
lp = new CHAR[10];
strcpy(lp,"123456789");
delete lp;
//lp++;
//delete lp;
lp=NULL;
}
ÕâÑù²»¾ÍÐÐÁËÂð
àÅ £¬ÎÒÖªµÀÓÐdelete[] lp;
µ«ÊÇ delete lp; ֻɾ³ýÁËÒ»¸ö×Ö·û...
ÔÙÓà delete ++lp; µÚ¶þ¸ö×Ö·û¾Í³ö´íÁË¡£
C/C++ code:
char *temp = lp+1;
delete lp;
lp = temp;
delete lp;
ÕâÑùÊÔÊÔ.
ÊÔÁË£¬ºÃÏñÒ²ÓдíÎó...........
lp = new CHAR[10];
´óд?
ÊÇСдµÄ
delete×öµÄ²»ÊÇɾ³ý×Ö·û£¬ÊÇÊÍ·ÅÄڴ棬˵°×ÁË£¬¾ÍÊÇÈóÌÐò¸ú²Ù×÷ϵͳ˵£¬ÄÇ¿éÄÚ´æÎÒ²»ÓÃÁË£¬»¹¸øÄã¡£
pÖ¸ÏòµÄÊÇÊý×éÓ¦¸ÃʹÓÃdelete[]À´ÊÍ·Å£¬Ê¹ÓÃdelete p;ºó£¬p µÄÖ¸Ïò½«ÊDz»¶¨µÄ£¬Ò²¾ÍÊÇËùνµÄÒ°Ö¸Õë¡£Èç¹ûÐÒÔ˵ϰ£¬ÄãµÄ³ÌÐòÒ²¿ÉÒÔ²»³ö´íµÄ¡£
ÄÇÄ㱨ʲô´íÎó°¡£¬ÎÒÔÚvs 2008Ï¿ÉÒÔÔËÐа¡
µÚÒ»¸ödelete lpºó¾ÍÊÇÒ°Ö¸ÕëÁË, Ö®ºóµÄlp++»áÖ¸ÏòÄÄÀï? ²»ÖªµÀÂï
Ïà¹ØÎÊ´ð£º
дÁ˸ö²âÊÔ³ÌÐòÈçÏÂ
struct hostent *hp;
char AlarmDevIP[20];
int x2;
hp = gethostbyname("www.google.com");
if (hp)
{
......
´ó¼ÒºÃ£º
ÎÒÏëʵÏÖ¼ì²âµ½²åÈëSD¿¨ºó×Ô¶¯½«SD¿¨¸ñʽ»¯µÄ¹¦ÄÜ£¬²»ÖªC/C++ÖÐÓÐûÓиñʽ»¯UÅ̵ĺ¯Êý£¿
ÁíÍ⣬ÎÒ²»ÏëʹÓÃSHFormatDrive£¬ÒòΪÕâ¸öº¯Êý»áµ¯³öÊÇ·ñÒª¸ñʽ»¯µÄÌáʾ¿ò£¬ÎÒÐèÒªµÄÊÇϵͳ×Ô¶¯¸ñʽ»¯£¬¶ø²Ù×÷Õß² ......
ÔÚ¸ùĿ¼/libÖдæ·ÅÒ»¸ölog.c£¬log.h£¬²¢ÓÃÏÂÃæµÄÓï¾ä£º
gcc -c log.c
ar crv liblog.a log.o
±àÒë³öÒ»¸öliblog.a¾²Ì¬¿â£¬È»ºóÔÚÎļþ¼Ð£º/testfileÖд´½¨Ò»¸ötest.cºÍtestc.c£¬test.cÖÐÒýÓÃÁËtestc.cÖж¨ÒåµÄ·½·¨ ......
ËÄܰïÎÒ°ÑÏÂÃæÕâЩ´úÂë¸Ä³ÉVBÐÎʽµÄ£¬¶àлÁË£¬¼±ÓÃ~~
#include "stdlib.h"
#include "math.h"
#include "stdio.h"
float objfx(float x[]);
void constraint(float x[],float g ......
visual c++2008Ëٳɰ棬²»ÄܱàÒëC³ÌÐòÂð£¿Èç¹ûÄÜÊÇÔõô¿ªÊ¼µÄ°¡£¿ÓÃËü´øµÄÃüÁîÌáʾµ¥Ôª³ýÍâ ¡£
н¨¹¤³Ì£¨¿Õ¹¤³Ì»òwin32¿ØÖÆÌ¨£©
¾ø¶Ô¿ÉÒÔ¡£½¨Á¢win32¿ØÖÆÌ¨³ÌÐò¾Í¿ÉÒÔ
ÒýÓÃ
н¨¹¤³Ì£¨¿Õ¹¤³Ì»òwin32¿ØÖÆÌ¨£ ......