VC++ GUID随机字符串生成

#include "stdafx.h"#include <stdio.h>#include <objbase.h> char* GuidToString(const GUID &guid); int _tmain(int argc, _TCHAR* argv[]){     GUID guid;     CoCreateGuid(&guid);     printf( "GUID: %s", GuidToString( guid ) ); return 0;}  char* GuidToString(const GUID &guid){     static char buf[64] = {0};     _snprintf(         buf,         sizeof(buf),         "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X",         guid.Data1, guid.Data2, guid.Data3,         guid.Data4[0], guid.Data4[1],         guid.Data4[2], guid.Data4[3],         guid.Data4[4], guid.Data4[5],         guid.Data4[6], guid.Data4[7]);     return buf;}