numbercounterinput

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  if(Serial.available()>0)
  {
    int a = Serial.parseInt();
    int b = Serial.parseInt();
    if(Serial.read() == '\n')
    {
      int c = a + b;
      Serial.println(c);
    }
  }
}