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 HP Fortran 90 Programmer's Reference: HP Fortran 90 Programmer's Reference > Chapter 10 HP Fortran 90 statements

SEQUENCE
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Imposes storage sequence on components of derived type object.

Syntax

SEQUENCE

Description

The SEQUENCE statement can appear once within any derived type definition; its presence specifies that a storage sequence on the components that is the same as their definition order. A derived type that includes the SEQUENCE statement in its definition is known as a sequence derived type. Sequence derived types are used:

  • To allow objects of sequence derived type to be storage associated with the COMMON and EQUIVALENCE statements.

  • To allow actual and dummy arguments to have the same type without use or host association. The corresponding actual and dummy arguments of derived types are of the same derived type if the derived-type objects refer to the same type definition. Alternatively, they are of the same type if all of the following are true:

    • They refer to different type definitions with the same name.

    • They have the SEQUENCE statement in their definitions.

    • The components have the same names and types and are in the same order.

    • None of the components is of a private type or of a type that has private access.

The following restrictions apply to the use of the SEQUENCE statement:

  • No more than one SEQUENCE statement may appear in the definition of a derived type.

  • If a derived type definition includes the SEQUENCE statement, each component that is of derived type must also include the SEQUENCE statement.

Examples

TYPE weather
! weather is a sequence derived type with two
!  character components and two integer components
   SEQUENCE
   CHARACTER(LEN=32) place
   INTEGER high_temp, low_temp
   CHARACTER(LEN=16) conditions
END TYPE weather

Related statements

TYPE, COMMON, and EQUIVALENCE

Related concepts

For information about sequence derived types, see “Sequence derived type”.



SELECT CASE
  		 


STATIC (statement, attribute, extension)  
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