Data Types, Variables and Operators

Start with data types

Begin with the “Data types” mind map for an overview of built-in, user-defined and derived types. It includes integral and floating types alongside arrays, functions, pointers and references. Use the branches to see how the terms are grouped before focusing on individual examples.

Next, try the “Data Types” flashcards. They ask what data integers and characters can store, how large they are and which C++ keywords represent them. Compare your answers with the terms on the map as you study.

Move on to operators

The C operators mind map groups arithmetic, relational, logical, assignment and other operators. It also includes increment and decrement, conditional and bitwise operators. Look at a group on the map, then use the C operators flashcards to practice recognizing the symbols and their uses.

The flashcards also cover the order of operations. You can return to the map when a symbol is unfamiliar and use its category as a clue. Then check the flashcards again without looking at the map.

Practice with a quiz

The C quiz includes questions about linkages and obtaining a remainder after division. Try it after working through the maps and flashcards. Use the questions to identify terms you want to look at again, then return to the relevant resource for another pass.

Explore constants and the unit

The constants flashcards cover const, preprocessor substitution and pointers. The “C++ Constants” mind map offers another resource on constants. These sit alongside the data type and operator materials in the Data Types, Variables and Operators section of the C, C++, C# and Other Languages unit in Computing and ICT.

Choose a map, work through a flashcard deck and try a quiz when you are ready.