Master Slave I2C

The code on the master
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#include "Wire.h"

setup add Wire.begin();

// Master write data to the Slave, send multiple data to the slave
void write_to_slave(int slave_number, int desirable_temp, boolean mode) // Master write to Slave ,send data to Slave
{
  Wire.beginTransmission(slave_number); // start data transmission to device #slave_number
  Wire.write(desirable_temp); // sends one byte
  Wire.write(mode); // sends one byte
  Wire.endTransmission();    // stop transmitting
}

 // Master reader form Slave device <number>,room[x][i]
// Master receive data from the Slave
void read_form_slave(int device,int room_number)
{
 Wire.requestFrom(device,4);    //request 4 bytes from device <number>
 while(Wire.available())    // slave may send less than requested
 {
  for(int i=0;i<4;i++)
  {
   int t;
   t = Wire.read(); // receive a byte as character
   room[room_number].room_temperature=t; // Use my own class, you can change for other variable
   t = Wire.read();
   room[room_number].user_temperature=t;
   t = Wire.read();
   room[room_number].motor_damper_status=t;
   t = Wire.read();
   room[room_number].thermostat_power_status=t;
  }
 }
}

The code on the slave - Send multiple data to the master

--------------------------------
The code on the Slave
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#define Slave_Address 2

add on the setup
 Wire.begin(Slave_Address);                // join i2c bus with address #2
 Wire.onRequest(requestEvent); // register event Slave sender to Master
 Wire.onReceive(receiveEvent); // register event Slave receiver from Master

//Slave sende multiple data to Master
void requestEvent()
{
  uint8_t Buffer[4];
  Buffer[0]=room[0]; //room temperature
  Buffer[1]=room[1]; //Desirable room temperature
  Buffer[2]=room[2]; //damper status OPEN/CLOSE
  Buffer[3]=room[3]; //power ON/OFF
  Wire.write(Buffer,4);
}

//Slave receiver from Master
void receiveEvent(int howMany)
{
  while (Wire.available() > 0)
  {
  int x = Wire.read();    // receive byte as an integer
  uint8_t m = Wire.read(); // receive boolean true or false
  Serial.print("the data receive is: ");
  Serial.println(x);  // print the integer
  temp_by_user=x; //receive desirable user temp for the room when user change in master
  mode=m; // boolean variable
  }
}