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/*
  String startWith() and endsWith()

  Examples of how to use startsWith() and endsWith() in a String

  created 27 Jul 2010
  modified 2 Apr 2012
  by Tom Igoe

  This example code is in the public domain.

  https://www.arduino.cc/en/Tutorial/BuiltInExamples/StringStartsWithEndsWith
*/
 

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void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  // send an intro:
  Serial.println("\n\nString startsWith() and endsWith():");
  Serial.println();
}
 

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void loop() {
  // startsWith() checks to see if a String starts with a particular substring:
  String stringOne = "HTTP/1.1 200 OK";
  Serial.println(stringOne);
  if (stringOne.startsWith("HTTP/1.1")) {
    Serial.println("Server's using http version 1.1");
  }

  // you can also look for startsWith() at an offset position in the string:
  stringOne = "HTTP/1.1 200 OK";
  if (stringOne.startsWith("200 OK", 9)) {
    Serial.println("Got an OK from the server");
  }

  // endsWith() checks to see if a String ends with a particular character:
  String sensorReading = "sensor = ";
  sensorReading += analogRead(A0);
  Serial.print(sensorReading);
  if (sensorReading.endsWith("0")) {
    Serial.println(". This reading is divisible by ten");
  } else {
    Serial.println(". This reading is not divisible by ten");
  }

  // do nothing while true:
  while (true);
}