/*
LCD DISPLAY
tipka1 = ocunter ++(m=1)
tipka2 = counter --(m=2)
tipka3 = counter = 0(m=3)
tipka4 = random(1,10)(m=3)
if
switch-case

*/
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

int counter, m;


void setup() {
  lcd.begin(16,2);
  pinMode(0, INPUT_PULLUP);
  pinMode(1, INPUT_PULLUP);
  pinMode(2, INPUT_PULLUP);
  pinMode(3, INPUT_PULLUP);
  randomSeed(analogRead(A0));

}

void loop() {

  int value = analogRead(A0);

  if(digitalRead(0) == LOW) //counter++;
    //lcd.setCursor(0,1);
    //lcd.print("Count: ");
    //lcd.print(counter);
    m=1;
  if(digitalRead(1) == LOW) //counter--;
    //lcd.setCursor(0,1);
    //lcd.print("Count: ");
    //lcd.print(counter);
    m=2;
  if(digitalRead(2) == LOW) //counter = 0;
    //lcd.setCursor(0,1);
    //lcd.print("Count: ");
    //lcd.print(counter);
    m=3;

  //int a = 0;
  if(digitalRead(3) == LOW){
    //a = random(0, 10);
    //lcd.setCursor(0,0);
    //lcd.print("Random:  ");
    //lcd.print(a);
    m=4;
  }
  //delay(300);

  switch(m) {
    case 1:{m=0;
            counter++;
            break;}
    case 2:{m=0;
            counter--;
            break;}
    case 3:{m=0;
            counter=0;
            break;}
    case 4:{m=0;
            counter = random(1, 10);
            break;}
    default:{m=0;
            break;}
  
  }
  lcd.clear();
  lcd.print(counter);

  delay(300);
}