Sending SMS to multiple receipents?

Projects Programming
1

Good evening,

I've got some code for a project I'm working where I send a SMS when a piece of equipment has failed out in the field.

I am sending it to a single recipient at the moment but need to send it to multiple recipients. I thought about adding another line to enter a second number and so on but was not sure if it worked. I could try it but currently the Arduino is connected to the equipment and i cant get to it for a few days.

Here is the code I'm currently using:

#include <SoftwareSerial.h>

SoftwareSerial GPRS(8, 9);
boolean state, lastState;

void setup()
{
pinMode(2, INPUT_PULLUP);
state = digitalRead(2);
lastState = state;

GPRS.begin(9600);
Serial.begin(9600);

GPRS.println("AT+CMGF=1");

delay(1000);
}

void loop()
{
while(GPRS.available()) {
Serial.write(GPRS.read());
}

lastState = state;
state = digitalRead(2);

if ( state != lastState ) {
sendSMS();
}

delay(500);
}

void sendSMS() {
Serial.print("Equipment:XXXXXXX Location:XXXXXXX Status:");
Serial.println(state ? "STARTED" : "!!!STOPPED!!!");

GPRS.println("AT+CMGS="+44***********"");

delay(500);

GPRS.print("Equipment:XXXXXXX Location:XXXXXXX Status:");
GPRS.println(state ? "STARTED" : "!!!STOPPED!!!");
GPRS.write( 0x1a ); // ctrl+Z character

delay(500);
} [/color]

You kind input would be greatly appreciated!!

2 
 GPRS.println("AT+CMGS=\"+44***********\"");
   
  delay(500);
 
  GPRS.print("Equipment:XXXXXXX Location:XXXXXXX Status:");
  GPRS.println(state ? "STARTED" : "!*!*!STOPPED!*!*!");
  GPRS.write( 0x1a ); // ctrl+Z character

just repeat this part for every number. (i think the delay(500); is not needed at all, but it may be a decent idea to put some delay in between sms transmissions so the sim gets time to execute.
n.b Please use </> code-tags to post code.

3

Would be far better to store the numbers in an array....

char* numbers[] = { ".....", "......", .......... };

for (int i = 0; i < n; i++) {
  GPRS.print("AT+CMGS=\"");
  GPRS.print(numbers[i]);
  GPRS.println("\"");
   
  delay(500);
 
  GPRS.print("Equipment:XXXXXXX Location:XXXXXXX Status:");
  GPRS.println(state ? "STARTED" : "!*!*!STOPPED!*!*!");
  GPRS.write( 0x1a ); // ctrl+Z character
}