FORTRAN, Data, Derived Types, Components
*Conan The Librarian
A reference to a component of a derived-type structure takes the following form: parent [%component [(s-list)]]... %component [(s-list)] parent Is the name of a scalar or array of derived type. The percent sign (%) is called a component selector. component Is the name of a component of the immediately preceding parent or component. s-list Is a list of one or more subscripts. If the list contains subscript triplets or vector subscripts, the reference is to an array section. Each subscript must be a scalar numeric expression with a value that is within the bounds of its dimension. The number of subscripts in any s-list must equal the rank of the immediately preceding parent or component. Each parent or component (except the rightmost) must be of derived type. The parent or one of the components can have nonzero rank (be an array). Any component to the right of a parent or component of nonzero rank must not have the POINTER attribute. The rank of the structure component is the rank of the part (parent or component) with nonzero rank (if any); otherwise, the rank is zero. The type and type parameters (if any) of a structure component are those of the rightmost part name. The structure component must not be referenced or defined before the declaration of the parent object. If the parent object has the INTENT, TARGET, or PARAMETER attribute, the structure component also has the attribute.
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