Created on 26.03.01
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Chapter V
More about Variables
So far you know that there are string variables (for
holding text) and numeric variables (for holding numbers). But numbers can be very different, and in
QBasic there are some different types of numeric variables:
Type of a variable |
The
number it can hold |
Example of a number |
Example of a variable |
INTEGER |
A whole number, from -32,767 to 32,767 |
5 |
a% |
LONG INTEGER |
A whole number, from more than
-2 billion to more than 2 billion |
92,345 |
a& |
SINGLE PRESICION |
A number with up to 6 digits after the decimal point. |
3.725 |
a! |
DOUBLE PRESICION |
A number with up to 15 digits after the decimal point |
3.1417583294 |
a# |
As you see, those types of variables have a special
symbol as part of their names:
% |
INTEGER |
||
& |
The SINGLE type of variable is the most widely used in
QBasic, and you don’t have to stick the !
symbol to it. If you put a
variable without any symbol, QBasic will know that this is a SINGLE
PRESICION variable. |
||
! |
SINGLE |
||
# |
DOUBLE |