LEN intrinsic function

LEN intrinsic function
Standard: F77 F90 F95 F2003 Example Program

<Syntax>
	LEN ( STRING [ , KIND ] ) STRING : scalar or array of type Character, with any kind; KIND : scalar Integer constant expression; Result: scalar Integer or Integer(Kind=KIND).

<Semantics>
	The LEN intrinsic function returns the character length of STRING; if STRING is an array, this is the number of characters in each element. This is an inquiry function; STRING need not have a value, and indeed except in the case of deferred character length (:) can even be an unallocated allocatable variable or a disassociated pointer. In Fortran 2003, the KIND argument should be used when the number of characters might exceed the range of a default integer; this is only relevant to 64-bit Windows as the ABI on 32-bit platforms and 64-bit Linux limit the maximum character length to 2GB-1. In Fortran 2003, this enquiry may also be performed on a character variable using the “%len” formulation (and this can be done even if LEN is not available for use as an intrinsic function, for example, if it is the name of another local variable).

<Related>
	CHARACTER type, LEN_TRIM intrinsic function.