Fortran Wiki
index
Description
Returns the position of the start of the first occurrence of string substring as a substring in string, counting from one. If substring is not present in string, zero is returned. If the back argument is present and true, the return value is the start of the last occurrence rather than the first.
Standard
FORTRAN 77 and later, with kind argument Fortran 2003 and later
Class
Syntax
result = index(string, substring [, back [, kind]])Arguments
string- Shall be a scalarcharacter, withintent(in)substring- Shall be a scalarcharacter, withintent(in)back- (Optional) Shall be a scalarlogical, withintent(in)kind- (Optional) Anintegerinitialization 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.
See Also
category: intrinsics