Constants - Variables - Data Types

There are 9 types of data types. These include boolean, string, integer, double, decimal, character, byte, float and long.

• Boolean is a binary value, being either true or false.

1  
2 bool test = true;

• String is used for storing characters in word form.
• Integer is used to store whole numbers (32 bit values).
• Double is used to store numbers where there are numbers before and after the decimal point.
• decimal is used for numbers only after the decimal point.
• Character is used to store single letters.
• Byte is used to store a byte( eight 1's or 0's).
• Float is used to store a set number of digits after a decimal place.
• Long integer is also used to store whole numbers (However these are 64 bit values).