Arrays

Arrays

If you declare 3 variables as num1, num2, and num3, 3 separate locations in memory are allocated. These are called scalar variables.

Instead you could declare num to be an array with a size of 3. The elements of an array are indexed, starting with 0. You would refer to these values as num[0], num[1], and num[3].
The index can be a variable.
For example if i=2, then num[i] would be the same as num[2]. This makes it easy to use loops to process the array.

Goals:

• Be able to declare and use an array

Objectives:

• Declare and use an array in a program;
• Trace execution of a program that uses arrays;
• Read a file into an array.

Please study the material at each of the links below.

1. Input 3 numbers
2. Input and Arrange
3. Names of Months
4. Find the day of the year
5. Fast Food menu
6. Read a file into an array
7. Employee program project
8. Project flow charts
9. Project starting code

Glossary for arrays lesson