Introduction

Abstract

The computer language Modula 2 was designed by Niklaus Wirth as a successor to his earlier language Pascal. Pascal was first written as a teaching language with the aim of introducing the student to the concept of structured programming. Since then many people have also been using Pascal to write large programs. Such programs tend to become unmanageable unless they can be divided into smaller parts each acted upon separately. Pascal does not have the facilities to do this properly, though certain extensions to the standard language, notably Turbo Pascal, have attempted to deal with this problem. Modula-2, however, does have these facilities. One objective of this book, therefore, is to show how reasonably sized programs can be designed and developed.