home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
No Fragments Archive 10: Diskmags
/
nf_archive_10.iso
/
MAGS
/
ST_PLUS
/
STP18.MSA
/
STP_VAR_DIM.STP
< prev
next >
Wrap
Text File
|
1997-06-30
|
4KB
|
114 lines
<PICLOAD>CORNER.DAJ
<PICSHOWD>048,085,272,113,048
BY DEANO
Varibles and Dimensions are a way of storing information in STOS to use in
your program, the two main pieces of info are words and numbers. Your program
would make a desision if one of these equaled something and act apon it. Heres
a simple example of a varible being used.
VARIBLES:
10 print "Please type in a number"
20 input A
30 print "You choose the number";A
What happens here is that the computer labels a little box called 'A' and
inserts the number you typed in at the input prompt into it. The number you
typed is now stored in the computers memory in a little box called 'A'. Line
30 looks in the box and prints its contents to the screen, which of course is
the number you entered.
'A' is the name we have chosen for the varible and the input command is one
way of putting information into it. Another way to put information into a
varible is like this.
10 let NUMBER=100
20 print NUMBER
Line 10 tells the computer to get one of its boxes and stick a label on it
calling it NUMBER, then put the value '100' inside it. Note, the use of the
command 'let' is optional and can be removed so your routine would be.
10 NUMBER=100
20 print NUMBER
Varibles can be called anything you wish, either a letter or a word, but you
must make sure that there are no STOS commands in the name or else you get
something like this......
10 sin GLE=10
If you used the word 'SINGLE' then STOS finds the command 'sin' and gets
confused. Try different names until you find one that appears in capitals.
Not only numbers can be used in varibles, so can words or letters. If you
wanted to put a word into a varible then you must add a '$' to the varible's
name, and the word must be put inbetween two quotes. For example.
10 NAME$="DEANO"
20 print "MY NAME IS ";NAME$
10 input "What is your name";NAME$
20 print "Hello There ";NAME$
You can also add varible values together which can be used in a game to add
points to your score, for example.
10 SC=100
20 print "Your score is ";SC
30 print "Press a Key"
40 SC=SC+10 : goto 20
Line 40 tells the varible SC to equal the value of itself which is '100' and
the add '10' to itself. The same applies to letters, usually known as strings
of characters. For example.
10 input "What is your first name";NAME$
20 input "What is your second name";SURNAME$
30 A$=NAME$+" "+SURNAMES
40 print "Hello ";A$
DIMENSIONS:
As you know, a varible is a little box inside the computers memory. A
dimension is a large box full of little boxes. Think of a cassette box, its
one big box with so many slots for your cassettes. A dimension allows you to
store so many pieces of information inside one varible. Heres an example of
how one could be used.
10 dim A(2) : rem Set up one varible box with two slots
20 A(1)=100 : A(2)=200
30 print A(1),A(2)
The same method can be used with strings.
10 dim NAME$(2)
20 NAME$(1)="ST" : NAME$(2)="PLUS"
30 print NAME$(1),NAME$(2)
Dimensions can be used exactly the same way as varibles, the only difference
is that with dimensions you use the varible name plus the number of slots in
the varible box....IE: dim SC(10).
Another type of dimension is the two way dimension. This is setting up so many
boxes with so many slots. Try this example.
10 dim NUMBER(5,10) : rem Set up five boxes each with ten slots.
20 NUMBER(1,1)=100 : rem Put '100' in box one, slot one
30 NUMBER(2,1)=500 : rem Put '500' in box two, slot one.
40 print NUMBER(1,1)
50 print NUMBER(2,1)
Errm, and thats it.....see you all next month.
DEANO