Four LED binary counter with count and display button

Projects Programming
1

For a project I need to create a binary counter that uses one button to count a desired number and then another button to display that number in binary through 4 leds.

So far I am able to compile without errors but my program does nothing. I wrote a serial output to test if the counter was working and nothing is displayed. Any help would be awesome.

int ledPin[] = {7,8,9,10};

const int countbuttonPin = 2;
const int startbuttonPin = 3;
int count = 0;
int countbuttonState = 0;
int lastbuttonState = 0;
int startlastbuttonState = 0;
int startbuttonState = 0;

void setup()
{
  pinMode(countbuttonPin, INPUT);
   pinMode(startbuttonPin, INPUT);
   Serial.begin(9600);
  for (int i =0;i<4;i++)
  {
    pinMode(ledPin[i], OUTPUT);
  }
}

void loop(){
  
  countbuttonState = digitalRead(countbuttonPin);
if (countbuttonState != lastbuttonState){
  if (countbuttonState == HIGH) {    
    
    count++;  
Serial.println(count);    
    if (count > 15) {
      count = 0;
    } 
  }
}
}

 
void startLoop(){
  startbuttonState = digitalRead(startbuttonPin);
  if (startbuttonState != startlastbuttonState){
  if (startbuttonState == HIGH)
  {
    displayBinary(count);
    
  }
}
}


void displayBinary(byte numToShow)
{
  for (int i =0;i<4;i++)
  {
    if (bitRead(numToShow, i)==1)
    {
      digitalWrite(ledPin[i], HIGH); 
    }
    else
    {
      digitalWrite(ledPin[i], LOW); 
    }
  }

}
2

In setup you need to have Serial.begin(youbaudrate);

3

thanks for the help i now get serial output however it outputs 1-15 endlessly without any button presses

4

How are your switches wired?

5

Imgur: The magic of the Internet here are two pictures of circuit

6

I don't see any connect to to the power rail for the 10K resistors.
It nice to draw an actual schematic of the circuit even if it is on paper.
There are of course two ways to wire your switches.

7 
void startLoop(){
  startbuttonState = digitalRead(startbuttonPin);
  if (startbuttonState != startlastbuttonState){
  if (startbuttonState == HIGH)
  {
    displayBinary(count);
    
  }
}
}

also you did not use this in your main loop