请大家帮我看看，我在基于控制台的下面做的。帮我调试修改一下？

#include<stdio.h>#include<string.h>void main()
{
    char Buf[256];
char installstr[30],flestr[30];
    HKEY hKey;
    RegOpenKey(HKEY_LOCAL_MACHINE,"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Adobe Acrobat",&hKey);
    char sCommand[256];
char *pCDROM = GetCDRom(Buf);
::strcpy(installstr,pCDROM);
::strcat(installstr,"\\ar500chs.exe");
::strcpy(flestr,pCDROM);
::strcat(flestr,"\\main.pdf");
    DWORD l =_MAX_PATH;
    DWORD dwType = REG_SZ;
    if(ERROR_SUCCESS!=RegQueryValueEx(hKey,"UninstallString",0,&dwType,(LPBYTE)sCommand,&l))
{

   if (pCDROM == NULL)
   MessageBox("Not Found CDROM");
   else
   {
//       MessageBox("uninstall acrobat5.0");
   ::ShellExecute(NULL,"open",installstr,NULL,NULL,SW_SHOWNORMAL);
   ::ShellExecute(0,"open","AcroRd32.exe",flestr,0,SW_SHOWNORMAL);
   }
}
    else
{

   if (pCDROM == NULL)
//    MessageBox("Not Found CDROM");
   else
   {
//          MessageBox("install acrobat5.0");
          ::ShellExecute(0,"open","AcroRd32.exe",flestr,0,SW_SHOW);    } }
}char * GetCDRom(char *Buf)
{
    char *pCDr = NULL;
    DWORD nBufferLength = 256;
    LPTSTR lpBuffer = Buf;
    DWORD dw = GetLogicalDriveStrings(nBufferLength,lpBuffer);
    char * p = Buf;
    while(*p)
{
      UINT uDriveType = GetDriveType(p);
      if(uDriveType == DRIVE_CDROM)
  {
          pCDr = p;
          break;
  }
  p+=strlen(p)+1;
}    return(pCDr);}