/*
  Blink

  Turns an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
  the correct LED pin independent of which board is used.
  If you want to know what pin the on-board LED is connected to on your Arduino
  model, check the Technical Specs of your board at:
  https://www.arduino.cc/en/Main/Products

  modified 8 May 2014
  by Scott Fitzgerald
  modified 2 Sep 2016
  by Arturo Guadalupi
  modified 8 Sep 2016
  by Colby Newman

  This example code is in the public domain.

  http://www.arduino.cc/en/Tutorial/Blink
*/
const int Leds[4]={13,10,9,8};
const int pbs[4] ={5,4,3,2};
const int pitches[4] ={123,230,354,568};
const int buzzer=8;
// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
 // pinMode(LED_BUILTIN, OUTPUT);
  //pinMode(LED_2, OUTPUT);
 // pinMode(buzzer, OUTPUT);
  for(unsigned int i=0;i<4;i++){
    pinMode(pbs[i], INPUT_PULLUP);
    pinMode(Leds[i], OUTPUT);
  }
  pinMode(buzzer, OUTPUT);
}
void blinkonce(unsigned int time,char Led)
{
   digitalWrite( Led,HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(time);                       // wait for a second
  digitalWrite(Led, LOW);    // turn the LED off by making the voltage LOW
  delay(time);                   
}
// the loop function runs over and over again forever
void loop() {
  for(unsigned int i=0;i<4;i++){
    if(digitalRead(pbs[i])==LOW){
      tone(buzzer,pitches[i],200);
     if(digitalRead(Leds[i])==LOW){
       tone(buzzer,pitches[i],200);
     
    }
   // for(unsigned int i=0;i<4;i++){

    else{
      noTone(buzzer);
      noTone(Leds);
    }
  }
}
}