void(* resetFunc) (void) = nullptr;

 

void setup() {     

  Serial.begin(9600);

  Serial.println("How to Reset Arduino Programmatically");

  delay(200);

}

 

void loop()

{

  Serial.println("A");

  delay(1000);               

  Serial.println("B");

  delay(1000);               

  Serial.println("Now we are Resetting Arduino Programmatically");

  Serial.println();

  delay(1000);

  (*resetFunc)();

  Serial.println("Arrduino will never reach there.");
}