String
 
  Reference for Wiring 1.0 (ALPHA) 0020+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.
Class   String
   
Name  

length()

   
Examples   
String str1 = "CCCP"; 
int l1 = str1.length(); 
Serial.println(l1, DEC);  // Prints 4

Description   Returns the total number of characters included in the string as an integer number.
   
Syntax   
length()
   
Returns   int
   
Usage   Web & Application