/*
   Forum: https://forum.arduino.cc/t/beginner-needs-help-with-debounce-logic/1425853/272
   Wokwi: https://wokwi.com/projects/460043180347195393

   2026/03/31
   ec2021

*/

void setup() {
  Serial.begin(115200);
  Serial.println("displayCount");
  displayCount( 2, 1);
  displayCount( 8, 1);
  displayCount( 9, 1);
  Serial.println("newDisplayCount");
  newDisplayCount( 2, 1);
  newDisplayCount( 8, 1);
  newDisplayCount( 9, 1);
}

void loop() {
  // put your main code here, to run repeatedly:

}


void displayCount(byte nDigits, unsigned long Count) {
  char countTxt[16];  // specific for this particular 2 line x 16 char LCD
  if (nDigits == 9) {
    snprintf(countTxt, sizeof countTxt, "%08.9ld", Count);      //
  }
  if (nDigits == 8) {
    snprintf(countTxt, sizeof countTxt, "%08.8ld", Count);      //
  }
  if (nDigits == 7) {
    snprintf(countTxt, sizeof countTxt, "%08.7ld", Count);      //
  }
  if (nDigits == 6) {
    snprintf(countTxt, sizeof countTxt, "%08.6ld", Count);      // original six digit counter "%08.6ld"
  }
  if (nDigits == 5) {
    snprintf(countTxt, sizeof countTxt, "%08.5ld", Count);      //
  }
  if (nDigits == 4) {
    snprintf(countTxt, sizeof countTxt, "%08.4ld", Count);      //
  }
  if (nDigits == 3) {
    snprintf(countTxt, sizeof countTxt, "%08.3ld", Count);      //
  }
  if (nDigits == 2) {
    snprintf(countTxt, sizeof countTxt, "%08.2ld", Count);      //
  }
  Serial.println(countTxt);
}

void newDisplayCount(byte nDigits, unsigned long Count) {
  char countTxt[16];  // specific for this particular 2 line x 16 char LCD
  char formStr[] = "%08.Xld";  // "X" is the placeholder at position 4 (counting from 0 as usual in C/C++)
  if (nDigits > 1 && nDigits < 10) {
    formStr[4] = '0' + nDigits;   // is equal to = 48 + nDigits; but easier to read/understand
    snprintf(countTxt, sizeof countTxt, formStr, Count);      //
    Serial.print(countTxt);
    Serial.print('\t');
    Serial.println(formStr);   // Just to show the effect of changing the char at position 4 in formStr
  }
  // If nDigits is not in the range 2..9 nothing happens
}