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string Big2Gb(const string& sBig)
{
char* pszBig5=NULL; //Big5±àÂëµÄ×Ö·û
wchar_t* wszUnicode=NULL; //Unicode±àÂëµÄ×Ö·û
char* pszGbt=NULL; //Gb±àÂëµÄ·±Ìå×Ö·û
char* pszGbs=NULL; //Gb±àÂëµÄ¼òÌå×Ö·û
string sGb; //·µ»ØµÄ×Ö·û´®
int iLen=0; //ÐèҪת»»µÄ×Ö·ûÊý

pszBig5=const_cast <char*>(sBig.c_str()); //¶ÁÈëÐèҪת»»µÄ×Ö·û²ÎÊý

//¼ÆËãת»»µÄ×Ö·ûÊý
iLen=MultiByteToWideChar (950, 0, pszBig5, -1, NULL,0) ;
//¸øwszUnicode·ÖÅäÄÚ´æ
wszUnicode=new wchar_t[iLen+1];
//ת»»Big5Âëµ½UnicodeÂ룬ʹÓÃÁËAPIº¯ÊýMultiByteToWideChar
MultiByteToWideChar (950, 0, pszBig5, -1, wszUnicode,iLen);

//¼ÆËãת»»µÄ×Ö·ûÊý
iLen=WideCharToMultiByte (936, 0, (PWSTR) wszUnicode, -1, NULL,0, NULL, NULL) ;
//¸øpszGbt·ÖÅäÄÚ´æ
pszGbt=new char[iLen+1];
//¸øpszGbs·ÖÅäÄÚ´æ
pszGbs=new char[iLen+1];
//ת»»UnicodeÂëµ½GbÂë·±Ì壬ʹÓÃAPIº¯ÊýWideCharToMultiByte
WideCharToMultiByte (936, 0, (PWSTR) wszUnicode, -1, pszGbt,iLen, NULL, NULL) ;

//ת»»GbÂë·±Ìåµ½GbÂë¼òÌ壬ʹÓÃAPIº¯ÊýLCMapString
LCMapString(0x0804,LCMAP_SIMPLIFIED_CHINESE, pszGbt, -1, pszGbs, iLen);

//·µ»ØGbÂë¼òÌå×Ö·û
sGb=pszGbs; <


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int M;
char* str;

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fin>>str;

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