Is it possible to add a piezo buzzer to a counter

Question

Is it possible to add a piezo buzzer to a counter:

my example:

(countD<70)

so 1 melody at =0 2nd melody 10,20,30,40,50,60 3rd melody 70

This is what I was playing around with:

if (countD=0)
buzz(2, 2500, 500);
++counter;

putting into this:

    if (countD<70)
    {
    if (countB<10) {
        digitalWrite(ledArray2[countB],LOW);
      }
      if (++countB>=10) countB=0; // For some reason changing this from 20 to 10 makes array not long pause
      if (countB<10) {
        digitalWrite(ledArray2[countB],HIGH);
      }
    countD++;
    }
    }
}
}

Any ideas if its possible?, Im sure it is but I cant find any documentation to help me.

so does this look okay?? 2500, 4000, 6000 I assume is the pitch or tone? so we get one melody for 0 and the second melody from 10-60 third dif melody on 70

 if (countD<70)

if((countD) == 0) buzz(2, 2500, 500);
if((countD % 10) == 10 - 60) buzz(2, 4000, 500);
if((countD % 10) == 70) buzz(2, 6000, 500);
{
        if (countB<10) {

Edit 2:

void buzz()

{
if(((countD % 10) == 0)) && ((countD > 10) && (countD < 70)))
{
buzz(2, 4000, 500);
}
else if((countD % 70) == 0) 
{
buzz(2, 6000, 500);
}}

Answer 1

Yes, just write your buzz() routine and call it on certain intervals of your count variable.

If you want it to be every 10 counts, then do something like:

if((countD % 10) == 0) buzz(2, 2500, 500);

EDIT

The updated code won't work as intended. The % or "modulo"operator returns the remainder of division by the number. So e.g. 8 % 2 = 0 as 2 goes into 8 exactly. 8 % 3 = 2, as 2 only goes twice into 8 with remainder 2.
So you can see that the result can not be higher than the modulo value, so countD % 10 == 70 will never be true. If you want it to buzz on every 70th count as well, use if ((countD % 70) == 0) buzz(2, 6000, 500); - this will buzz on the 70th count, 140th count, 210th count and so on.

If you need to specify every 10th count between certain values, then combine the mod with an and logic check like so:

if(((countD % 10) == 0)) && ((countD > 10) && (countD < 70))) buzz(2, 4000, 500);