View difference between Paste ID: Wbm7zVZu and Uh4xTjLQ

   #include <LiquidCrystal.h> //import lcd library
   #include <Keypad.h> //import keypad library
 
   LiquidCrystal lcd(5, 4, 3, 2, 1, 0); //lcd pins
   const byte ROWS = 4; // four rows
   const byte COLS = 3; // three columns
 
   int latchPin = A5;  //Pin connected to ST_CP of 74HC595
   int clockPin = A2;  //Pin connected to SH_CP of 74HC595
   int dataPin = A1;  ////Pin connected to DS of 74HC595
 
   char keys [ROWS] [COLS] = {
      {'1', '2', '3'},
      {'4', '5', '6'},
      {'7', '8', '9'},
      {'X', '0', 'o'} };
 
   byte rowPins[ROWS] = {9 ,8 ,7 ,6}; //connect keypad ROW1, ROW2, ROW3, ROW4 to these arduino pins
   byte colPins[COLS] = {13, 12, 11}; //connect keypad COL1, COL2, COL3 to these arduino pins
 
   //create the keypad
   Keypad myKeypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
 
   //variables declaration
   String num1, num2;
   int ans;
 
   void setup(){
 
   pinMode(latchPin, OUTPUT);
   pinMode(clockPin, OUTPUT);
   pinMode(dataPin, OUTPUT);
 
   //set lcd welcome screen
   lcd.begin(16,2);
   lcd.setCursor(2,0);
   lcd.print("vloz hodnotu");
   lcd.setCursor(3,1);
   lcd.print("el. odporu");
 
 }
 
 void loop(){
   char key = myKeypad.getKey();
 
     if (key != NO_KEY && (key == '1' || key == '2' || key == '3' || key == '4' || key == '5' || key == '6' || key == '7' || key == '8' || key == '9' || key == '0')){
           num1 = num1 + key;
           int numLength = num1.length();
           lcd.clear();
 
           ans = num1.toInt(); //from strings to integer
 
 	  switch (ans)
 	  {
 		case 1:
 		  ans = 0b00000001;
-    shiftOut(dataPin, clockPin, LSBFIRST, ans);
+		break;
 
 		case 2:
 		  ans = 0b00000010;
 		break;
 
 		// atd.
 	  }
 
           lcd.print(ans); //print answer
 
  //Ans je vlastne hodnota z klavesnice. Ak ans=2 tak sa ledky sa rozsvietia v poradi 01000000 (cize ide o prevod do bin. kodu)
  //tuto by som potreboval predefinovat, resp. priradit hodnote z klavesnice inu binarnu hodnotu. Skusal som vytvarat matice hodnot ale nic.
 
     digitalWrite(latchPin, LOW);
     shiftOut(dataPin, clockPin, LSBFIRST, ans);  // problem bude mozno ze musis posielat ako MSBFIRST
     digitalWrite(latchPin, HIGH);
 
 
 
      }
     }