Control sound using pushbuttons

1/****************************************************************************
2  *Controlling sounds using push buttons
3 *                                                    by  Zayed alam
4 *Hi guys!
5 *Today as always I have an interesting project which  needs the following
6 *breadboard
7 *buzzer
8 *pushbuttons
9 *wires
10  *arduino,nano,uno or mega
11 *You can add additional buttons(If you have multiple  same breadboard.
12 *****************************************************************************
13  */
14int but1=2;//For button1
15int but2=3;//For button2
16int but3=4;//FOr button3
17int  but4=5;//for button4
18 int buttonState1=0;
19 int buttonState2=0;
20 int buttonState3=0;
21  int buttonState4=0;
22
23const int buzzer=6;//Our buzzer
24void setup() {
25  // put your setup code here, to run once:
26pinMode(buzzer,OUTPUT);
27pinMode(but1,INPUT);
28pinMode(but2,INPUT);
29pinMode(but3,INPUT);
30pinMode(but4,INPUT);
31}
32
33void  loop() {
34  // put your main code here, to run repeatedly:
35buttonState1 = digitalRead(but1);
36  buttonState2 = digitalRead(but2);
37  buttonState3 = digitalRead(but3);
38   buttonState4  = digitalRead(but4);
39
40   if(buttonState1==HIGH){//If we press first button
41    tone(buzzer,1000);
42    delay(20);
43    noTone(buzzer);
44   }
45   if(buttonState2==HIGH){
46    tone(buzzer,100);
47    delay(20);
48    noTone(buzzer);
49   }
50   if(buttonState3==HIGH){
51    tone(buzzer,10);
52    delay(20);
53    noTone(buzzer);
54   }
55   if(buttonState4==HIGH){
56    tone(buzzer,786);
57    delay(20);
58    noTone(buzzer);
59   }
60   
61}
62