Manual Reference Pages - scan (3)
NAME
scan(3f) - [FORTRAN:INTRINSIC:CHARACTER] Scan a string for the presence of a set of characters
SYNTAX
result = scan(string, set[, back [, kind]])
DESCRIPTION
Scans a STRING for any of the characters in a SET of characters.If BACK is either absent or equals FALSE, this function returns the position of the leftmost character of STRING that is in SET. If BACK equals TRUE, the rightmost position is returned. If no character of SET is found in STRING, the result is zero.
ARGUMENTS
STRING Shall be of type CHARACTER. SET Shall be of type CHARACTER. BACK (Optional) shall be of type LOGICAL. KIND (Optional) An INTEGER initialization expression indicating the kind parameter of the result.
RETURN VALUE
The return value is of type INTEGER and of kind KIND. If KIND is absent, the return value is of default integer kind.
EXAMPLE
Sample program:
program demo_scan implicit none write(*,*) scan("fortran", "ao") ! 2, found ’o’ write(*,*) scan("fortran", "ao", .true.) ! 6, found ’a’ write(*,*) scan("fortran", "c++") ! 0, found none end program demo_scan
STANDARD
[[Fortran 95]] and later, with KIND argument [[Fortran 2003]] and later
CLASS
[[Elemental procedure|Elemental function]]
SEE ALSO
Functions that perform operations on character strings, return lengths of arguments, and search for certain arguments:
Elemental: adjustl(3), adjustr(3), index(3), len_trim(3), scan(3), verify(3) Nonelemental: repeat(3), trim(3)
| scan (3) | March 11, 2021 |
