Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol

//Master
#include<Wire.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(12,11,5,4,3,2);
void setup()
{
Serial.begin(9600);
Wire.begin(1);
Wire.onReceive(temp);
lcd.begin(16,2);
}
void loop()
{
delay(50);
}

void temp(int y)
{

signed int temperature=Wire.read();
lcd.setCursor(0,0);
lcd.print("The Temperature is");
lcd.setCursor(0,1);
lcd.print(temperature);
lcd.print("deg celcius\n");
delay(50);

}

//Slave
#include<Wire.h>

void setup()
{
pinMode(A0, INPUT);
Serial.begin(9600);
Wire.begin();

}

void loop()
{
signed int volt=analogRead(A0);
volt = volt*4.88;
signed int temperature = volt/10;
Wire.beginTransmission(1);
Wire.write(temperature);
Wire.endTransmission();
delay(50);
}