Corretions and refinements to the String examples

build/linux/work/examples/08.Strings/StringLengthTrim/StringLengthTrim.ino

@@ -0,0 +1,40 @@
+/*
+  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);
+  // this check is only needed on the Leonardo:
+  while (!Serial) ;
+ ;
+
+  Serial.println("\n\nString  length() and trim():");
+}
+
+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);
+}