/* String replace() Examples of how to replace characters or substrings of a string created 27 July 2010 by Tom Igoe http://arduino.cc/en/Tutorial/StringReplace This example code is in the public domain. */ void setup() { Serial.begin(9600); Serial.println("\n\nString replace:"); } void loop() { String stringOne = "<html><head><body>"; Serial.println(stringOne); // replace() changes all instances of one substring with another: String stringTwo = stringOne.replace("<", "</"); Serial.println(stringTwo); // you can also use replace() on single characters: String normalString = "bookkeeper"; Serial.println("normal: " + normalString); String leetString = normalString.replace('o', '0'); leetString = leetString.replace('e', '3'); Serial.println("l33tspeak: " + leetString); // do nothing while true: while(true); }