Arrays

Arrays

store multiple variables of the same type

int anArray[7]

int: data type

anArray: name/ identifier

[7]: size

elements 

value stored in a specific space in the array

for loops

help store values into each space in the array

uses int value index or whatever you want to call it

anArray[3] = 1;

anArray[3]: expression used to refer to one element

=1: the value of that element

if you reach outside the bounds of the array

there won’t be a compiler error

might lead to junk

Macro

can be used to set size

can be set then changed using varible in the array

#define SIZE 100

int array[SIZE]

use for loop with index to store into array[index]

variable

user decides size

scalar

single value varibles

composite

multiple values

Behavior

data isn’t displayed but stays within the size you have set for the data

contiguous

memory addresses are sequential