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

//Master
#include<Wire.h>

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

void loop()
{
float x = analogRead(A0);
signed int v = ((x*5)/1024);
Wire.beginTransmission(1);
Wire.write(v);
Wire.endTransmission();
delay(1000);
}

//Slave
#include<Wire.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(12,11,5,4,3,2);

void setup()
{
Serial.begin(9600);
Wire.begin(1);
Wire.onReceive(volt);
lcd.begin(16,2);
}

void loop()
{
delay(1000);
}

void volt(int y)
{
signed int v = Wire.read();
//Serial.print(v);
//Serial.println(v);
lcd.setCursor(0,0);
lcd.print("Output is ");
lcd.print(v);
delay(1000);
}