| /* |
| String length() and trim() |
| |
| Examples of how to use length() and trim() in a String |
| |
| created 27 July 2010 |
| modified 2 Apr 2012 |
| by Tom Igoe |
| |
| http://arduino.cc/en/Tutorial/StringLengthTrim |
| |
| This example code is in the public domain. |
| */ |
| |
| void setup() { |
| // Open serial communications and wait for port to open: |
| Serial.begin(9600); |
| while (!Serial) { |
| ; // wait for serial port to connect. Needed for Leonardo only |
| } |
| |
| // send an intro: |
| Serial.println("\n\nString length() and trim():"); |
| Serial.println(); |
| } |
| |
| void loop() { |
| // here's a String with empty spaces at the end (called white space): |
| String stringOne = "Hello! "; |
| Serial.print(stringOne); |
| Serial.print("<--- end of string. Length: "); |
| Serial.println(stringOne.length()); |
| |
| // trim the white space off the string: |
| stringOne.trim(); |
| Serial.print(stringOne); |
| Serial.print("<--- end of trimmed string. Length: "); |
| Serial.println(stringOne.length()); |
| |
| // do nothing while true: |
| while(true); |
| } |