C / C++ / MFC

#include <iostream>
using namespace std;

class Element{

public:
	int value;
	Element *next;

	Element() : value(0), next(NULL) {}
	Element(int v) : value(v), next(NULL) {}
	Element(int v,Element *n) : value(v), next(n) {}
};

class Stack{

private:
	int length;
	Element head;

public:
	Stack() : head(), length(0) {}

	void clear();
	void traversal() const;
	void push(int value);
	int pop();
};


void Stack::clear(){
	head = Element();
}

void Stack::traversal() const{
	if (length == 0)
		cout << "The stack is empty" << endl;
	else{
		Element e = head;
		while(true){
			cout << e.value << ' ';
			if (e.next != NULL)
				e = *e.next;
			else
				break;
		}
	}
}
void Stack::push(int value){
	if (length == 0)
		head = Element(value);
	else
		head = Element(value,&head);

	length++;
}

int Stack::pop(){
	return 0;
}




int main(int argc, string args[]){
	Stack s;
	
	cout << endl;

	for (int i = 0; i < 10; i++)
		s.push(i);
	s.traversal();

	cout << endl;

	return 0;
}

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);
}