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C/C++ code:

#include<iostream>
#include<map>
#include<stdlib.h>
#include<signal.h>
#include<errno.h>
#include<unistd.h>
#include<string.h>
#include<sys/resource.h>
#include<sys/stat.h>
#include<sys/types.h>
#include<fcntl.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<sys/socket.h>

#define PORT 80
#define BUFSIZE 8196
#define LISTENQ 64 //

using namespace std;

struct client_t{
int fd;
int state;
unsigned int pois;
string ip;
string read_buf;
string write_buf;

//http request
string method_req;
string url;
string http_v;
string host;
client_t(){
fd=0;
state=0;//¶Áд״̬£¬0-¶Á£¬1-д
pois=0;
ip.clear();
read_buf.reserve(BUFSIZE);
write_buf.reserve(BUFSIZE);
method_req.clear();


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gcc -O0 -g3 -Wall -c -fmessage-length=0 -oHelloWorld.o ..\HelloWorld.c
gcc -otest.exe HelloWorld.o
d:/MinGW/bin/../lib/gcc/mingw32/3.4.5/../../. ......

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exit() ºÍreturn ;½áÊøµÄÇø±ðºÍÓÅȱµã
ÎÒ²»Ì«Ã÷°×exit() ËüÊÇÖ±½ÓÍ˳ö³ÌÐòÂð ËüÏÂÃæÒªÊÇ»¹Óк¯Êý»¹ÄÜÖ´ÐÐÂð
Èç
void a()
{
  exit();
}
void b()
{
...
}
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