Arrays

Use

storing and managing bigger blocks of data

provide a simple way of storing multiple instances ‘a sequence’ of the same data type

Declaring

int aListOfInts[5]; //array of 5 integers

Indexed from…

0

Initialiser

can initialise only part of the array

starting from 0

int aListOfInts[5] = {1, 2, 3, 4, 5};
aListOfInts[0] = 5; //overwriting the 1st

Arrays

named contiguous data blocks in memory

don’t know how many elements are initialised

Arrays won’t Grow if…

you access memory before or after the allocated space

Array Bounds

C compiler won’t protect you

need to track these yourself and code defensively

Printing a Value in an Array

printf("Element 3 is %d\n", aListOfInts[2]);