Sprintf Example for Arduino

sprintf.ino

// Sprintf Example for Arduino
// https://www.programmingelectronics.com/sprintf-arduino/
// Note that sprintf for Arduino does not support float: 
// https://forum.arduino.cc/t/solved-why-cant-i-print-a-float-value-with-sprintf/367971

char buffer[25]; // create a buffer long enough to hold string

void setup() {
  Serial.begin(115200);
  randomSeed(32); // needed only because we use random below in this example
}

void loop() {
  int x = random(9);
  // below is the use of sprintf to format serial output
  sprintf(buffer, "%4d %4d %4d %4d", x, (x * 2), (x * 10), (x * 20));
  Serial.println(buffer);
}