Arrays

Abstract

An array stores more than one value, of a common data type, under a collective name. Each value has a unique slot and is referenced using an indexing technique. Figure 9.1 shows a circuit with five resistors, which could be declared with a program with five real declarations. If these resistor variables were required to be passed into a function all five would have to be passed through the parameter list. A neater method uses arrays to store all of the values under a common name (in this case R). Thus a single array variable can then be passed into any function that uses it.