#include <Wire.h>

void setup() {
  Wire.begin(8);                 
  Wire.onReceive(receiveEvent);  
  Wire.onRequest(requestEvent);
  Serial.begin(9600);           
}

void loop() {
  delay(100);
}
 
void receiveEvent(int howMany) {
  while (1 < Wire.available()) {  
    char c = Wire.read();  
    Serial.print(c);        
  } 
  int x = Wire.read();   
  Serial.println(x);         
}

void requestEvent() {
  Wire.write("Received");  
}