C / C++ / MFC

void setup_gsm(void)
{

        //setup_gsm
	// turn on the telit module and verify, else reset autobaud
	PWON = 1;
	Delay10KTCYx(40);
	// reset ram pointer
	RESET = 0;
	// AT command test
	// response: AT
	putrsUSART ((const far rom char *)"AT\r");
	Delay10KTCYx (50);
	// set_baud
	RESET = 0;                     
	// set_baude_rate 300,1200,2400,4800,9600,19200......
	// response: OK
	putrsUSART ((const far rom char *)"AT+IPR=115200\r");
	Delay10KTCYx (50);
	// disable_echo
	RESET = 0;
	// Disable echo command
	// response: OK
	putrsUSART ((const far rom char *)"ATE=0\r");        
	Delay10KTCYx (50);                                              
	// caller_id.
	RESET = 0;
        // Set CALLER ID; 1=on
	// response: OK
	putrsUSART ((const far rom char *)"AT+CLIP=1\r");
	Delay10KTCYx (10);
	// error_code
	RESET = 0;
	// Enable extended error code ; 1 =numeric
	// response: OK
        putrsUSART ((const far rom char *)"AT+CMEE=1\r");
       Delay10KTCYx(10);                                                   
	// sms_format
	RESET = 0;
	// SMS format type; 1=text
	// response: OK
	putrsUSART ((const far rom char *)"AT+CMGF=1\r");
       Delay10KTCYx(10);                                                   
	// sms_format
	RESET = 0;
	// Send sms to phone number
	// response: OK
	putrsUSART ((const far rom char *)"AT+CMGS=+phonenumber\r\n");
	Delay10KTCYx (10);
	// unsolecit_ind
	RESET = 0;
	// DISABLE New message unsolecited indication +CMTI
	// response: OK
	putrsUSART ((const far rom char *)"AT+CNMI=0,0,0,0,0\r"); 
	Delay10KTCYx (10);
	// storage_set
	RESET = 0;
	// AT+CPBS="SM"    set phonebook normal SIM
	putrsUSART ((const far rom char *)"AT+CPBS="SM\"\r");    
	Delay10KTCYx (50);
}

#include <fstream><br />
#ifdef _DEBUG<br />
#define new DEBUG_NEW<br />
#endif

#ifdef _DEBUG<br />
#define new DEBUG_NEW<br />
#endif<br />
#include <fstream>

#include <iostream>
#include <string>

using namespace std;

int main()
{

// Global Variables
int userinput;
int sum = 0;
sum = sum + userinput;


// Start While loop
while (userinput != 0)
{
// Prompt User for input
cout << "Please enter a number. When you are finished, type 0 and press Enter." ;
cin >> ++userinput ;    

}
cout << "The sum is:" << sum << endl;
return 0;
}

class CTestClass
{
public:
  void AMethod(int x);
  BOOL BMethod(char y);
};

template<typename TParamType>
class TTestTemplate
{
  typedef void(CTestClass::* LPFN_AMETHOD)(TParamType);
  typedef BOOL(CTestClass::* LPFN_BMETHOD)(TParamType);

  bool fIsAFn;
  union {
    LPFN_AMETHOD fnA;
    LPFN_BMETHOD fnB;
  };
public:
  TTestTemplate(LPFN_AMETHOD pFn):fnA(pFn), fIsAFn(true ) {}
  TTestTemplate(LPFN_BMETHOD pFn):fnB(pFn), fIsAFn(false) {}

  void Call(CTestClass *pInstance, TParamType val);
};

template<typename TParamType>
void TTestTemplate<TParamType>::Call(CTestClass *pInstance, TParamType val)
{
  if (fIsAFn) (pInstance::*fnA)(val); //<---- !!!!!!!!!!!!!! THIS IS THE LINE !!!!!!!!!!!!!! -------------
  else (pInstance::*fnB)(val);
}