2. Why Use Arrays
Arrays
are used for dealing with sets of
data elements that are of the same type.
You can have an array of ints, doubles,
chars, strings, etc.
Arrays mean not having to create
separate variables/names for each
element.
Arrays are contiguous spaces in memory.
3. How do we use Arrays
int
Declares an array of size 5
int
grades[5];
grades[5] = {1, 2, 3, 4, 5};
Assigns values to each of the elements
grades[0]
Assigns value of 100 to the first element.
grades[4]
= 100;
= 10;
Assigns value of 10 to the last element.
4. Limits and Advice
Arrays
must have a variable type.
The first element of an array is number 0.
The last is: size-1;
For
now, we cannot create an array with
a variable size. (ex: int array[n];)
Unassigned elements should not be
assumed to be zero.
Use a separate for loop for each task.
