A character substring is a contiguous segment of a character variable or character array element. It takes one of the following forms:
v ([e1]:[e2]) a (s [,s] . . . ) ([e1]:[e2])
Character positions within a character variable or array element
are numbered from left to right, beginning at one. For example,
LABEL(2:7) specifies the substring beginning with the second
character position and ending with the seventh character position
of the character variable LABEL. If the CHARACTER*8 variable LABEL
has a value of
If the value of the numeric expression e1 or e2 is
not of type integer, it is converted to an integer before use (any
fractional parts are truncated). 'XVERSUSY', then the
substring LABEL(2:7) has a value of VERSUS.
The values of the numeric expressions e1 and e2 must meet the following conditions:
(1 .LE. e1) .AND. (e1 .LE. e2) .AND. (e2 .LE. len)
If e1 is omitted, Fortran assumes that e1 equals one. If e2 is omitted, Fortran assumes that e2 equals len. For example, NAMES(1,3)(:7) specifies the substring starting with the first character position and ending with the seventh character position of the character array element NAMES(1,3).