#include <iconv.h>#include <string.h>////編碼轉換int code_convert(char *to_charset, char *from_charset,                 char *inbuf, int inlen, char *outbuf, int outlen){    iconv_t cd;  int flag;  char **pin = &inbuf;  char **pout = &outbuf;  flag = 0;  if ((cd=iconv_open(to_charset, from_charset))==(iconv_t) -1)    flag = -1;    bzero(outbuf,outlen);    if (iconv(cd,pin, &inlen, pout, &outlen)==(size_t) -1)    flag = -1;    iconv_close(cd);  return flag;}//GB2312碼轉為UNICODE碼int g2u(char *inbuf, int inlen, char *outbuf, int outlen){  return code_convert("utf-8", "gb2312", inbuf, inlen, outbuf, outlen);}//UNICODE碼轉為GB2312碼int u2g(char *inbuf, size_t inlen, char *outbuf, size_t outlen){  return code_convert("gb2312", "utf-8", inbuf, inlen, outbuf, outlen);}