#include <Wire.h>

void setup() {
  Wire.begin();        // join i2c bus (address optional for master)
  Serial.begin(9600);  // start serial for output
}

void loop() {

  Wire.requestFrom(8, 1);    // request 1 byte from peripheral device #8
  while (Wire.available()) { // peripheral may send less than requested
    char c = Wire.read(); // receive a byte as character    
    Serial.print(c);         // print the character

    if (c == '1'){
      Serial.println("Button not pushed");
    }

    else{
      Serial.println("Button pushed!!");
    }
  }

  delay(500);
}