Am writing a program to control CD drive. Brings errors "undefined reference to 'mciSendCommandA@16' " and " undefined reference to 'winmain@16' ". Please help eliminate errors

#include <tchar.h>
#include <windows.h>
#include <mmsystem.h> // for MCI function

//link to winmm.lib (usually included in project setting)
#pragma comment(lib, "winmm")

void ControlCdTray(TCHAR drive, DWORD command)
{
	//Not used here, only for debug
	MCIERROR mciError=0;
	//flags forMCI command
	DWORD mciFlags=MCI_WAIT|MCI_OPEN_SHAREABLE|
	MCI_OPEN_TYPE|MCI_OPEN_TYPE_ID|MCI_OPEN_ELEMENT;
	
	//open drive device and get device ID
	TCHAR elementName[]={drive};
	MCI_OPEN_PARMS mciOpenParms={0};
	mciOpenParms.lpstrDeviceType=(LPCTSTR)MCI_DEVTYPE_CD_AUDIO;
	mciOpenParms.lpstrElementName=elementName;
	mciError=mciSendCommand(0,
	 MCI_OPEN, mciFlags, (DWORD_PTR)&mciOpenParms);
	
	//Ejecting or closing tray using device ID
	MCI_SET_PARMS mciSetParms={0};
	mciFlags=MCI_WAIT|command;//command is send by caller
	mciError=mciSendCommand(mciOpenParms.wDeviceID,
	MCI_SET, mciFlags, (DWORD_PTR)&mciSetParms);
	
	//close device ID
	mciFlags=MCI_WAIT;
	MCI_GENERIC_PARMS mciGenericParms={0};
	mciError=mciSendCommand(mciOpenParms.wDeviceID,
	 MCI_CLOSE, mciFlags,(DWORD_PTR)&mciGenericParms);
}
	//Eject drive tray
	void EjectCdTray(TCHAR drive)
	{
		ControlCdTray(drive, MCI_SET_DOOR_CLOSED);
	}
	
	//Retract drive tray
	void CloseCdTray(TCHAR drive)
	{
		ControlCdTray(drive,MCI_SET_DOOR_CLOSED);
	}
	int_tmain(int argc,_TCHAR* argv[])
	{
		EjectCdTray(TEXT('E')); //driveletter hardcoded
		CloseCdTray(TEXT('E'));
		return 0;
	}