String name = "";
String number = "";

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

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println("hello world");
  while(Serial.available() == 0 );
  name = Serial.readString();
  Serial.println("enter your mobile number");
  Serial.println("welcome to wokwi:" + name);
  number = Serial.readString();

}