Arduino Magic 8 Ball

/*
 Magic 8 Ball

 learnelectronics
 25 Jun 2018

 www.youtube.com/c/learnelectronics
 email: [email protected]


 */


#include <LiquidCrystal.h>                                      // include the library code:

                                                                // initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

bool myswitch = 1;                                              // create Boolian varibale for switch

void setup() {

  lcd.begin(16, 2);                                             // set up the LCD's number of columns and rows:


pinMode(8,INPUT_PULLUP);                                        //set pin 8 as input with internal pullup

}

void doit(){                                                    //declare function for when switch is activated
  randomSeed(analogRead(0));                                    //seed random num generator
  int randNumber = random(5);                                   //get random number between 0 and 5

  lcd.setCursor(0, 1);                                          //reset cursor
  lcd.print("                ");                                //clear display
  lcd.setCursor(0, 1);                                          //reset cursor
  switch (randNumber) {                                         //switch case on random number
  case 0:                                                       //send answer to lcd
    lcd.print("YES!");
    break;
  case 1:
    lcd.print("No");
    break;
    case 2:
    lcd.print("Maybe");
    break;
    case 3:
    lcd.print("Ask me later");
    break;
    case 4:
    lcd.print("Answer Unclear");
    break;
    case 5:
    lcd.print("Just order pizza");
    break;

}
}

void loop() {
  myswitch = digitalRead(8);                                      //read pin 8 and send result to variable
  if (myswitch == 0){                                             //if the pin is low
    doit();                                                       //call function doit
  }
}