Zebra0.com

Before a variable can be used, it must be declared. To declare a variable, first decide what type of information you want to store.

Alice has the following types:

• Numbers with decimal places and very large numbers are Double.
• Whole numbers, number with no decimal places are Integer.
• Variables that can only have the values true or false are Boolean.
• Words, such as "Hello", or a persons name are String.

End of lesson, Next lesson: