ARDUINO Alarm 1.0

#include <Keypad.h>

char* password = "123";  // change the password here, just pick any 3 numbers
int possition = 0;
const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};

byte rowPins[ROWS] = { 7, 9, 8, 7 };
byte colPins[COLS] = { 6, 5, 4, 3 };
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );



int pir = 2;
int led = 12;
int sttate = 0;
int rep = 11;
int alarm = 0;
int ledZ = 13;

void setup(){
pinMode(2,INPUT_PULLUP);
pinMode(13,OUTPUT);
pinMode(11,OUTPUT);
pinMode(12,OUTPUT);
Serial.begin(9600);
LockedPosition(true);
}

void loop(){
char key = keypad.getKey();
  if (possition == 0)
    {
    LockedPosition(true);
}
if (key == '*' || key == '#')
{
possition = 0;
  }

if (key == password[possition])
{
possition ++;
}
if (possition == 3)
{
LockedPosition(false);
}
delay(100);
}
void LockedPosition(int locked)
{
if (locked){
sttate = digitalRead(pir);
if (sttate == HIGH)
  {
  alarm = 1;  
    }
if (alarm == 1 )  
 {
  digitalWrite(led,HIGH);
    analogWrite(rep,80);
  }
  
  Serial.println(sttate);
}
else {
    digitalWrite(led,LOW);
    analogWrite(rep,0);
  alarm = 0;
  LockedPosition(true); 
  digitalWrite(ledZ,HIGH);
  delay(500);
  digitalWrite(ledZ,LOW);
  delay(500);
  digitalWrite(ledZ,HIGH);
  delay(500);
  digitalWrite(ledZ,LOW);
  delay(500);
  digitalWrite(ledZ,HIGH);
  delay(500);
  digitalWrite(ledZ,LOW);
  digitalWrite(ledZ,HIGH);
  delay(500);
  digitalWrite(ledZ,LOW);
  digitalWrite(ledZ,HIGH);
  delay(500);
  digitalWrite(ledZ,LOW);
  digitalWrite(ledZ,HIGH);
  delay(500);
  digitalWrite(ledZ,LOW);
  digitalWrite(ledZ,HIGH);
  delay(500);
  digitalWrite(ledZ,LOW);
  digitalWrite(ledZ,HIGH);
  delay(500);
  digitalWrite(ledZ,LOW);
  }
 }