callocÖеÄc´ú±íʲôÒâ˼? - C/C++ / CÓïÑÔ
callocÖеÄc´ú±íʲôÒâ˼?
calloc
c ´ú±íCÓïÑÔ
alloc ´ú±íÉêÇë¡¢ÇëÇó
»¹ÒÔΪÄãÎʵÄÊÇcalloc()ºÍmalloc()Ö®¼äÓÐÊ²Ã´Çø±ðÄØ¡£¡£¡£
c = clear(clean)
1Â¥Õý½â
ÎÒÀ´½Ó·Ö Â¥Ö÷ºÃÈË
Ïà¹ØÎÊ´ð£º
дÁ˸ö²âÊÔ³ÌÐòÈçÏÂ
struct hostent *hp;
char AlarmDevIP[20];
int x2;
hp = gethostbyname("www.google.com");
if (hp)
{
......
ÈçÌ⣬C/C++ÖеÄexeclÔõôµ÷ÓÃдºÃµÄjava³ÌÐò£¬
execl("/opt/java1.5/bin/java","MyClass",NULL);
ÕâÑùµÄ²»ÐÐŶ¡£
²»»á.
ÔËÐÐjava³ÌÐò
ÕÒ¹¤¾ß²é¿´Ò»ÏÂÄǸö³ÌÐòµÄÃüÁîÐÐ
ËÑË÷Ï£ºjni ......
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·¨ ......
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£¬ ......
ÎÒ¸Õ°ÑÌ·ºÆÇ¿µÄµÚÈý°æµÄÊéѧÍ꣬ÎÒÖªµÀµÄÓÐC++£¬CºÍÖ¸Õë CȱÏݺÍÏÝÚå Cר¼Ò±ä³É£¬»¹ÓÐÊý¾Ý½á¹¹£¬ÎÒÏëÎÊÎÊÎÒÓ¦¸ÃÒÔʲô˳ÐòÀ´Ñ§ÄØ
CȱÏݺÍÏÝÚå Cר¼Ò±à³Ì
Êǽø½×µÄ£¬²»Óü±×Å¿´
ÖÁÓÚ
CºÍÖ¸Õë
Äã²»Àí½âÖ ......