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    µ±extern²»Óë"C"ÔÚÒ»ÆðÐÞÊαäÁ¿»òº¯Êýʱ£¬ÈçÔÚÍ·ÎļþÖÐ: extern int g_Int;  ËüµÄ×÷ÓþÍÊÇÉùÃ÷º¯Êý»òÈ«¾Ö±äÁ¿µÄ×÷Ó÷¶Î§µÄ¹Ø¼ü×Ö£¬ÆäÉùÃ÷µÄº¯ÊýºÍ±äÁ¿¿ÉÒÔÔÚ±¾Ä£¿é»îÆäËûÄ£¿éÖÐʹÓ㬼ÇסËüÊÇÒ»¸öÉùÃ÷²»ÊǶ¨Òå!Ò²¾ÍÊÇ˵BÄ£¿é(±àÒëµ¥Ôª)ÒªÊÇÒýÓÃÄ£¿é(±àÒëµ¥


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#include<regex.h>
int main(int argc, char** argv)
{
if(IsLegalPage("http://www.baidu.com"))
printf("¸ÃÍøÒ³ºÏ·¨\n");
else printf("¸ÃÍøÒ³²»ºÏ·¨£¡£¡£¡\n");
return 0;
}
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//Á¬½ÓÍ·Îļþ
#include <io.h>
#include <dir.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//¿½±´ÎļþÄ£¿é
int copyfile (char *infile, char *outfile)
{
    FILE *in,*out; //¶¨ÒåÎļþÖ¸Õë
    in = fopen(infile,"r"); //´ ......

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perrorº¯Êý     void perror( char const *message);
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void exit( int status );    Ô­ÐͶ¨ÒåÓÚstdlib.h
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{
SqlConnection cnn = new SqlConnection
("context connection=true");
cnn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = cnn;
cmd.CommandText = "select * from customers";
SqlDataReader reader = cmd.ExecuteReader();
SqlContext.Pipe.Send(reader);
reader.Close();
cnn.Close();
}
......
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