How do I write this IF statement?

[killzone_kid]

What type is var2?

[UKHeliBob]

It sounds like you are planning to write a separate function to write each digit value (10) to each digit position (4), hence 40 functions. Don't do it that way

Suppose that you wrote a function to which you passed the digit position (0 - 3) and the digit to be displayed (0 - 9) then you could do it with a single function

You can split an int into separate digits like this

    //split the count into single digita
    data[0] = count / 1000;
    data[1] = (count / 100) % 10;
    data[2] = (count / 10) % 10;
    data[3] = count % 10;

declare an index of an array of segments for that digit value like this

const byte segmentData[] =
{
  0b11111100, //0
  0b01100000, //1
  0b11011010, //2
  0b11110010, //3
  0b01100110, //4
  0b10110110, //5
  0b10111110, //6
  0b11100000, //7
  0b11111110, //8
  0b11110110  //9
};

Iterate through the data array to get each digit value then use it to look up the associated segments and turn them on

[k1ng_1337]

haha yes that was exactly the plan. I understand what you are telling me but I'm not there yet in my arduino lingo but I'm looking into it now. As soon as johnwasser provided a solution I opened a new can of worms just organizing the whole mess.. this topic was more about finding a solution to the current road block.

Perhaps you can elaborate on your reply.. How do I implement your code?

Regards,

[UKHeliBob]

I am not sure that I can add more without actually writing the code, which I think you should do

Start by writing a sketch that splits the 4 digit number into separate digits and prints them on separate lines in the Serial monitor

Once that works write a function that takes a byte of value 0 to 9 and prints the corresponding entry in the segmentData array in binary. Call that from your first sketch. You should see a 1 for each segment that needs to be on and 0 for the others.

Using the bitRead() function you can iterate through the bits and turn the associated segments on or off