Advanced Data Types

Abstract

The advanced data types include enumerated types that allow for identifying specified values for a type and for subtypes, which are variations of existing types. There are composite types that include arrays and records. And there are predefined data types, text and lines, that facilitate text input and output operations. These types and functions are provided in package TEXTIO, which is contained in library STD. The advanced data types are:

• 1 Extended scalar types

  • enumerated types

  • subtypes

  • physical types

• 2 Composite types

  • arrays

  • records

• 3 Access types equivalent to pointers in typical programming lang

• 4 Other predefined types

  • files

  • lines