How to display an entire incoming string from the serial monitor in arduino ide? this is my first question in this forum.

I need to receive a string from the Arduino serial monitor and display it when the communication is over. I have a similar problem like the one discussed in this thread:

https://electronics.stackexchange.com/questions/45543/how-do-i-receive-an-entire-string-as-opposed-to-1-character-at-a-time-on-the-ard

Only I'm using the Arduino serial monitor instead of a RaspberryPi to send strings so I can't program the sender to attach an identifier like '\n' at the end of the string.

char inData[20];
char inChar=-1;
byte index = 0;

while (Serial.available() &gt; 0){
  ending[1]=ending[1]+1;
  if(index &lt; 19){

      inChar = Serial.read();
      inData[index] = inChar;
      index++;
      inData[index] = '\0';
      Serial.flush();   
  }
  Serial.print(inData);Serial.print("\t");Serial.println();
}


What I receive in the console looks like this:

M
Me  
Mes 
Mess    
Messa   
Messag
Message


I need to display only the final string

Message


The code has to know when the incoming string ended and then display it once.

I'd really appreciate any help I can get.
If you really want a string. Try using Serial.readString(). It will return the full string.

The code could look like this:

if(Serial.available()
{
  string message = Serial.readString();
  Serial.println(message);
}