After the session on multi-dimensional arrays, I thought it best to take a look at them again.
To get your head around them it is perhaps best to think of an array as similar to a table storing data.
In the following example, I will use a selection of books for an online store. Each book will have a set of meta data which will be need to be stored in the array (or table)
Each book will be stored in a row of the array, and the 4 pieces of data will be stored stored within the row in different coloums as in the table below:
| Title | Author | Price | ISBN | |
|---|---|---|---|---|
| Column 0 | Column 1 | Column 2 | Column 3 | |
| Row 0 | The Girl with the Dragon Tattoo | Stieg Larsson | 7.99 | 1847245458 |
| Row 1 | Silence of the Lambs | Thomas Harris | 6.99 | 0099297701 |
| Row 2 | Harry Potter and the Philosopher's Stone | J K Rowling | 6.99 | 0747542988 |
| Row 3 | Smiley's People | John le Carre | 1.95 | 0330262726 |
| Row 4 | The Business | Iain Banks | 6.99 | 0349112452 |
| Row 5 | The Hitch-Hikers Guide to the Galaxy | Douglas Adams | 2.99 | 0330258648 |