SCAN— Scan a string for the presence of a set of characters ¶
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.
Fortran 90 and later, with KIND argument Fortran 2003 and later
RESULT = SCAN(STRING, SET[, BACK [, KIND]])
|STRING||Shall be of type |
|SET||Shall be of type |
|BACK||(Optional) shall be of type |
|KIND||(Optional) An |
The return value is of type
INTEGER and of kind KIND. If
KIND is absent, the return value is of default integer kind.
PROGRAM test_scan WRITE(*,*) SCAN("FORTRAN", "AO") ! 2, found 'O' WRITE(*,*) SCAN("FORTRAN", "AO", .TRUE.) ! 6, found 'A' WRITE(*,*) SCAN("FORTRAN", "C++") ! 0, found none END PROGRAM