CAMBRIDGE IGCSE Topic 8.1 User input and display output Also in this topic... CAMBRIDGE IGCSE Topic 8.1 Variables and constants CAMBRIDGE IGCSE Topic 8.1 The use of the three basic programming constructs CAMBRIDGE IGCSE Topic 8.1 The common Boolean operators CAMBRIDGE IGCSE Topic 8.1 Library routines CAMBRIDGE IGCSE Topic 8.2 The use of arrays