Çó½ÌC¸ßÊÖ£¬Ò»ÌâcÓïÑÔ³ÌÐò×÷Òµ£¡ - C/C++ / CÓïÑÔ
ÏÂÃæÒ»¶Î³ÌÐò»á²úÉúʲô½á¹û£¿ÎªÊ²Ã´£¿
void GetMemory(char *p,int num)
{
p = (char *)malloc(sizeof(char),num);
return;
}
int main()
{
char *str = NULL;
GetMemory(&str,100);
strcpy(str,"Helllo World.");
printf(str);
return 0;
}
¸ßÖÊÁ¿CÁÖÈñ¸½C++Ìâ
£¨1£©Äܹ»Êä³öHelllo World.
£¨2£©ÄÚ´æÐ¹Â©
ûÓÐÊÍ·ÅÄڴ棬ÍüÁË¡£returnǰ¼ÓÒ»¾ä:
free(str);
Õý½â...
C/C++ code:
void GetMemory(char *p,int num)
{
p = (char *)malloc(sizeof(char) * num); // Õâ¶ùÓ¦¸ÃÊÇ*°É¡£
return;
}
int main()
{
char *str = NULL; // Õâ¾äÏ൱ÓÚconst char* str = NULL; str ²»¿É±ä¡£
GetMemory(str,100); //Õâ¾ästr»¹ÊÇNULL¡£
strcpy(str,"Helllo World.");
printf(str);
return 0;
}
C/C++ c
Ïà¹ØÎÊ´ð£º
дÁ˸ö²âÊÔ³ÌÐòÈçÏÂ
struct hostent *hp;
char AlarmDevIP[20];
int x2;
hp = gethostbyname("www.google.com");
if (hp)
{
......
ÇëÎÊVFPÖÐÈçºÎµ÷ÓÃC/C++º¯Êý£¿
ÄãÒªµ÷ÓÃʲô¹¦Äܵĺ¯Êý£¿Òª¿´¿´VFPÖÐÓÐûÓжÔÓ¦µÄº¯Êý£¬Èç¹ûÓоÍÊ¡×ÅÔÙµ÷ÓÃÁË¡£Èç¹ûûÓУ¬¿ÉÒÔ½«C/C++º¯Êýд¸öDLL»òFLL£¬È»ºóÔÚVFPµ÷Óü´¿É¡£
Ê®¶¹Èý ÀÏʦ£¬Ôõô²ÅÄÜÐÞ¸Ä×Ô¼ºµÄ ......
±¾ÈËÕýÔÚÓÃJava×öÒ»¸öC/S¼Ü¹¹µÄÏîÄ¿£¬
¿ÉÊÇÓÉÓÚÏîÄ¿±È½Ï´ó£¬Ç°ÆÚ¶Ô¼Ü¹¹µÄÉè¼ÆÓÈÆäÖØÒª£¬ÒòΪºóÆÚ¿ÉÄÜËæÊ±»á¼Ó¸ö¹¦ÄÜ»òÕßÈ¥µôijЩ¹¦ÄÜ¡£
ËùÒÔÌØµØÑ°ÇóÈçºÎÉè¼ÆC/SµÄ¼Ü¹¹Ê¹³ÌÐò¸ü¼ÓÃæÏò¶ÔÏó¸ü¼ÓÒ×ÓÚά ......
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¨£ ......
¹«Ë¾¿ª·¢Ò»¸ö´¥ÃþÆÁ³ÌÐò£¬ÎÒ¸ºÔðµÄÒ»¿é£¬ÊµÏÖÕâÑùÒ»¸ö¹¦ÄÜ£¬µ±Êó±êµã»÷´°¿ÚÖÐͼƬ£¨Ò»ÕÅͼ·Ö³É¼¸²¿·Ö£©µÄÆäÖÐÒ»²¿·Öʱ£¬½«Õⲿ·ÖͼƬ½ØÈ¡³öÀ´£¬µ¯³öеĴ°¿Ú£¬½«½ØÈ¡³öµÄͼƬÏÔʾ³öÀ´¡£ÎÒʹÓÃRectangeÀà¿ØÖÆÁË·µ»Ø£¬ ......