SYSTEM PROGRAMMING FOR FLOOD MONITORING SYSTEM USING GSM

#include <GSM_Shield.h>
# define LED 13
# define BUTTON 7
# define BUTTON1 6
# define BUTTON2 12

//**************************************************************************
char number[]="+60194253272";  //Destination number
char text1[]="FIRST WARNING-level 1-!!!!!!!!";  //SMS to send
char text2[]="SECOND WARNING-level 2-!!!!!!!!";  //SMS to send
char text3[]="LAST WARNING-level 3-!!!!!!!!";  //SMS to send

//**************************************************************************

GSM gsm;
int error;
int sensor1 = 0;
int sensor2 = 0;
int sensor3 = 0;
int state_new = 0;
int state_old = 0;
void setup()
{
  pinMode (LED, OUTPUT);
  pinMode(BUTTON, INPUT);
  pinMode(BUTTON1, INPUT);
  pinMode(BUTTON2, INPUT);

  Serial.begin(9600);
  Serial.println("system startup");
  Serial.println("waiting");


  gsm.TurnOn(9600);          //module power on
  gsm.InitParam(PARAM_SET_1);//configure the module
  gsm.Echo(0);               //enable AT echo
}
void loop()
{
 Serial.println("ready to sent sms");

status_update:
if (state_new - state_old == 0)// no update in sensor status
{
   goto update_sensor;
}
else if (state_new - state_old < 0 || state_new - state_old > 0) // changes in status
{
   goto texting;
}
status_update1:
if (state_new - state_old == 0)// no update in sensor status
{
   goto update_sensor;
}
else if (state_new - state_old < 0 || state_new - state_old > 0) // changes in status
{
   goto texting2;
}
status_update2:
if (state_new - state_old == 0)// no update in sensor status
{
   goto update_sensor;
}
else if (state_new - state_old < 0 || state_new - state_old > 0) // changes in status
{
   goto texting3;
}


update_sensor:
sensor1 = digitalRead (BUTTON);   //sensor1
sensor2 = digitalRead (BUTTON1);  //sensor2
sensor3 = digitalRead (BUTTON2);  //sensor3
if (sensor1 == LOW)
   {
     if (sensor2 == LOW)
     {
        if (sensor3 == LOW)
        {
         text3;
         state_new = 3;
         goto status_update2;
        }
        text2;
        state_new = 2;
        goto status_update1;
     }
    text1;
     state_new = 1;
     goto status_update;
   }
else
    {
    state_new = 0;
    }
goto update_sensor;

texting:
        digitalWrite(LED, HIGH);
        Serial.print("Send SMS to ");
        Serial.println(number);
        error=gsm.SendSMS(number,text1);
        Serial.println("SMS sent \n");
        state_old = state_new;
        goto update_sensor;

texting2:
        digitalWrite(LED, HIGH);
        Serial.print("Send SMS to ");
        Serial.println(number);
        error=gsm.SendSMS(number,text2);
        Serial.println("SMS sent \n");
        state_old = state_new;
        goto update_sensor;

texting3:
        digitalWrite(LED, HIGH);
        Serial.print("Send SMS to ");
        Serial.println(number);
        error=gsm.SendSMS(number,text3);
        Serial.println("SMS sent \n");
        state_old = state_new;
        goto update_sensor;

}


        -- below the program in arduino software
     

}