void GetSysInfo()
{
    char szComputerName[MAXBYTE] = {0};
    char szUserName[MAXBYTE] = {0};
    unsigned long nSize=MAXBYTE;
    OSVERSIONINFO OsVer;
   
    OsVer.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
    GetVersionEX(& OsVer);
   
    if(OsVer.dwPlatformId==VER_PLATFORM_WIN32_NT)
    {
        if(OsVer.dwMajorVersion==5 && OsVer.dwMinorVersion==1)
        {
            printf("Windows xp %s \r\n",OsVer.szCSDVersion);
        }
        else if(OsVer.dwMajorVersion==5 && OsVer.dwMinorVersion==0 )
        {
            printf("Windows 2K \r\n");
        }
    }
    else
    {
        printf("Other System \r\n");
    }

    GetComputerName(szComputerName, &nSize);
    printf("Computer Name is %s \r\n",szComputerName);

    nSize = MAXBYTE;
    GetUserName(szUserName,&nsize);
    printf("User Name is %s \r\n",szUserName);
}

嗯，这只是一个文件中的函数。