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±àÒëÒ»¸öͼÏó½Ó¿Ú¿â£¬ÆäÖÐÓõ½cvSaveImage( out_img_name, img); ±àÒ뱨´í£º
too few arguments to function cvSaveImage
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CVAPI(int) cvSaveImage(const char*  filename, const CvArr* image, const int* params CV_DEFAULT(0)
);
²éÁËһϣ¬Ô­À´È±Ê¡²ÎÊýÊÇ c++µÄרÀû --- Õâ¶¼²»ÖªµÀ, º¹¡«¡«¡«


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C/C++ÊÇ×îÖ÷ÒªµÄ±à³ÌÓïÑÔ¡£ÕâÀïÁгöÁË50ÃûÓÅÐãÍøÕ¾ºÍÍøÒ³Çåµ¥£¬ÕâÐ©ÍøÕ¾Ìṩc/c++Ô´´úÂë¡£Õâ·ÝÇåµ¥ÌṩÁËÔ´´úÂëµÄÁ´½ÓÒÔ¼°ËüÃǵÄС˵Ã÷¡£ÎÒÒѾ¡Á¦°üÀ¨×î¼ÑµÄC/C++Ô´´úÂëµÄÍøÕ¾¡£Õâ²»ÊÇÒ»¸öÍêÕûµÄÇåµ¥£¬ÄúÓн¨Òé¿ÉÒÔÁªÏµÎÒ£¬ÎÒ½«»¶Ó­ÄúµÄ½¨Ò飬ÒÔ½øÒ»²½¼ÓÇ¿Õâ·½ÃæµÄÇåµ¥¡£
1¡¢http://snippets.dzone.com/tag/c/ --ÊýÒÔǧ¼Æ ......

fork compare to exec in linux c program

pid_t  pid=fork()
it has 3 situation for the return result pid
0  child
>0 parent process
<0 fork fail
fork create a new process  and it parent live alse when the child process had been created ......

»ù±¾ÔËËãµ¥ÔªµÄ¸ß²ã´Î×ۺϣºC/C++ to RTL

±¾ÎÄÒÔ¼Ó·¨ÎªÀý£º[code]
//----------------------------------------------------
//adder.c
//---------------------------------------------------
void adder(int a, int b, int *sum)
{
        *sum = a + b;
}
[/code][size=3]
[/size]
HLS¹¤¾ß£¨AutoPilot£©×ÛºÏÖ®ºóµÄ½á¹ ......

extern "C"

extern "C"
extern "C"°üº¬Ë«Öغ¬Ò壬ÆäÒ»£º±»ËüÐÞÊεÄÄ¿±êÊÇ“extern”µÄ£»Æä¶þ£º±»ËüÐÞÊεÄÄ¿±êÊÇ“C”µÄ¡£
1£©±»extern “C”ÏÞ¶¨µÄº¯Êý»ò±äÁ¿ÊÇexternÀàÐ͵ģ»
    externÊÇC/C++ÓïÑÔÖбíÃ÷º¯ÊýºÍÈ«¾Ö±äÁ¿×÷Ó÷¶Î§£¨¿É¼ûÐÔ£©µÄ¹Ø¼ü×Ö£¬¸Ã¹Ø¼ü×Ö¸æËß±àÒëÆ÷£¬ÆäÉùÃ÷µÄº¯ ......

python udp c/s ¼Ç¼

server:
import sys
import socket
host = sys.argv[1]
port = int(sys.argv[2])
 
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
 
s.bind((host,port))
 
while 1:
    try:
   &n ......
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