DIY Rock Paper Scissor Game

// https://www.youtube.com/channel/UCaXI2PcsTlH5g0et67kdD6g  //
// Stone Paper Scissor Game //
// By MOHD SOHAIL //

#include<LiquidCrystal.h>
#include <Servo.h>

LiquidCrystal lcd(A0,A1,A2,A3,A4,A5);
volatile long A;

float checkdistance_11_10() 
{
digitalWrite(11, LOW);
delayMicroseconds(2);
digitalWrite(11, HIGH);
delayMicroseconds(10);
digitalWrite(11, LOW);
float distance = pulseIn(10, HIGH) / 58.00;
delay(10);
return distance;
}

Servo servo_3;
Servo servo_6;
Servo servo_9;

int red1 = 2;
int red2 = 4;
int red3 = 5;
int speaker = 12;

void setup()
{
 lcd.begin(16,2);
 lcd.setCursor(0,0);
 lcd.print(" Rock Paper and ");
 lcd.setCursor(0,1);
 lcd.print(" Scissor Game ");
 delay(4000);
 lcd.clear();
 
A = 0;
pinMode(11, OUTPUT);
pinMode(10, INPUT);
pinMode(12, OUTPUT);
pinMode(red1, OUTPUT);
pinMode(red2, OUTPUT);
pinMode(red3, OUTPUT);
servo_3.attach(3);    // stone
servo_6.attach(6);    // paper
servo_9.attach(9);     // scissor
servo_3.write(179);
servo_6.write(179);
servo_9.write(179);
}

void loop()
{
if (checkdistance_11_10() < 10) {
A = random(0, 4);
switch (A) {
case 1:
tone(12,131);
delay(100);
noTone(12);
servo_3.write(120);
 lcd.setCursor(0,0);
 lcd.print(" It's....");
 lcd.setCursor(0,1);
 lcd.print("      Stone....");
 digitalWrite(red1, HIGH);
delay(1000);
servo_3.write(179);
digitalWrite(red1, LOW);
lcd.clear();
delay(500);
break;
case 2:
tone(12,131);
delay(100);
noTone(12);
servo_6.write(120);
lcd.setCursor(0,0);
 lcd.print(" It's....");
 lcd.setCursor(0,1);
 lcd.print("      Paper....");
 digitalWrite(red2, HIGH);
delay(1000);
servo_6.write(179);
digitalWrite(red2, LOW);
lcd.clear();
delay(500);
break;
case 3:
tone(12,131);
delay(100);
noTone(12);
servo_9.write(120);
lcd.setCursor(0,0);
 lcd.print(" It's....");
 lcd.setCursor(0,1);
 lcd.print("     Scissor....");
 digitalWrite(red3, HIGH);
delay(1000);
servo_9.write(179);
digitalWrite(red3, LOW);
lcd.clear();
delay(500);
break;
}
}
}