// C++ code
//
int x1 = 0;
String x2;
int x3 = 0;
void setup()
{
  Serial.begin(9600);
}

void loop()
{
  x1 = Serial.available();
  Serial.print("x1=");
  Serial.println(x1);
  x2= Serial.read();
  Serial.print("x2=");
  Serial.println(x2);
  Serial.print("x1=");
  Serial.println(x1);
  Serial.println("_________");
  delay(5000); // Wait for 1000 millisecond(s)

}