Procedures and Program Structure

Abstract

It has already been noted in chapter 3.1 that the form of an Algol 68 program is a closed clause. Within this closed clause, we have seen, other closed clauses and other kinds of closed clause like choice and loop clauses can be nested. Thus an Algol 68 program has a nested ‘block’ structure just like an Algol 60 program. In the first part of this chapter this structure is related to questions such as the scope of identifiers (and other declared entities) and storage mechanisms.