Atari XL

First Steps 13
In working out expressions like this, the computer
follows strict rules about the order in which the'
various arithmetical operations are performed.
First
The
expressions inside brackets
are
evaluated.
Second
Any
powers
(squares,
cubes,
etc.)
indicated by /\ are worked out.
Third
The
computer
performs
the
multiplications and divisions.
Fourth The
additions and subtractions are
performed.
If you are unsure, put brackets round the bit you .
want calculated first. Try the following examples,
and see if you can work out the answers yourself to
check that you know what the computer is doing.
PRINT 2 * 2 + 2 * 2
PRINT 2
+ 2 * 2 + 2
PRINT
6 + 3/ 5-4
PRINT 3
A 2 + 4 /\ 3/ 2
PRINT
(3 + 4) * 2
Both text and numbers can be printed by a single
PRINT command if they are separated by a semi-
colon. For example:
PRINT "3+5 = "; 3+5
DISPLAYING CHARACTERS
There are several ways in which the characters
displayed may be altered.