Assigning Values to Arrays

Assigning Values

After being created/declared, access and element or “slot” of the array variable by its index.

Picture an array like a numbered list starting at zero...

shoppingList
0	"milk"
1	"bread"
2	"eggs"
3	"bottled water"
4	"soda"

ages
0	12
1	31
2	7
3	80
4	45
5	50
6	51
7	50

Example Code:

Processing:

shoppingList[0] = "milk";
shoppingList[1] = "bread";
shoppingList[2] = "eggs";
shoppingList[3] = "bottled water";
shoppingList[4] = "soda";

ages[0] = 12;
ages[1] = 31;
ages[2] = 7;
ages[3] = 80;
ages[4] = 45;
ages[5] = 50;
ages[6] = 51;
ages[7] = 50;

for (int i = 0; i < randNums.length(); i++) {
	randNums[i] = random(0, 5);
}

Equivalent to:

randNums[0] = random(0, 5);
randNums[1] = random(0, 5);
randNums[2] = random(0, 5);