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Forum Index : Microcontroller and PC projects : MMBasic: special characters in a string

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PilotPirx

Regular Member

Joined: 03/11/2020
Location: Germany
Posts: 99
Posted: 05:06pm 30 Dec 2024
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Hello,
starting with MMBasic and graphics i got the problem to put special characters (f.e. >127) in a string.
How to define a string with characters which are not on the keyboard?
With the sinclair spectrum you could use caps shift and GRAPHICS to get these characters.
 
twofingers

Guru

Joined: 02/06/2014
Location: Germany
Posts: 1576
Posted: 05:12pm 30 Dec 2024
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special character=chr$(ascii)

or

inc special_character$,chr$(ascii)

inc special_character$, STRING$( nbr, ascii )

ascii= 0 to 255
  Quote  With the sinclair spectrum you could use caps shift and GRAPHICS to get these characters.

There are no keys for these characters in PicoMite.

Michael
Edited 2024-12-31 03:23 by twofingers
causality ≠ correlation ≠ coincidence
 
JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4038
Posted: 05:25pm 30 Dec 2024
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Such as:

a = 128
b$ = chr$(a)

You can get at the value again:
c = asc(b$)

(then a and c are the same)

John
 
PilotPirx

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Joined: 03/11/2020
Location: Germany
Posts: 99
Posted: 05:32pm 30 Dec 2024
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  Quote  special character=chr$(nbr)

Which means such kind of string is not possible?
Only character=chr$(nbr)+chr$(nbr)+ and so on.
 
JohnS
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Joined: 18/11/2011
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Posts: 4038
Posted: 05:41pm 30 Dec 2024
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  PilotPirx said  Only character=chr$(nbr)+chr$(nbr)+ and so on.

Yes.

Or use a loop.

John
 
disco4now

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Joined: 18/12/2014
Location: Australia
Posts: 1000
Posted: 09:53pm 30 Dec 2024
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Also see Special Characters in Strings on page 23 of the manual. Using OPTION ESCAPE allows their entry in decimal escaped by a backslash.
Latest F4 Latest H7 FotS
 
phil99

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Joined: 11/02/2018
Location: Australia
Posts: 2611
Posted: 09:59pm 30 Dec 2024
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  twufingers said  inc special_character$,chr$(ascii
and
  Quote  Or use a loop.

so:-
> for n=128 to 138 : inc s$, chr$(n) : next
> for n=1 to 11 : ? asc(mid$(s$,n,1)); : next
128 129 130 131 132 133 134 135 136 137 138
>
 
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