| /* | |
| String Case changes | |
| Examples of how to change the case of 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/StringCaseChanges | |
| */ | |
| 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 case changes:"); | |
| Serial.println(); | |
| } | |
| void loop() { | |
| // toUpperCase() changes all letters to upper case: | |
| String stringOne = "<html><head><body>"; | |
| Serial.println(stringOne); | |
| stringOne.toUpperCase(); | |
| Serial.println(stringOne); | |
| // toLowerCase() changes all letters to lower case: | |
| String stringTwo = "</BODY></HTML>"; | |
| Serial.println(stringTwo); | |
| stringTwo.toLowerCase(); | |
| Serial.println(stringTwo); | |
| // do nothing while true: | |
| while (true); | |
| } | |