String stringdata;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello World");
}

void myserial() {
  Serial.println("from myserial function");
}

void readdata() {
  if (Serial.available() > 0) {
    Serial.print("Data : ");
    stringdata = Serial.readString();

    Serial.println(stringdata);
  }
}

void loop() {
  readdata();
  delay(1000);
}