In Keys - Sharp PC-1500A Instruction Manual

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Example 2:
10
z
=
65
20
PRINT CHRS
Z
Output:
nuN
•
A
The first example shows the use of an ASCII decimal code as an argument. The result is con·
catcnatcd t o the strring .. OP" producing "COP" . The second example assigns
a
numeric value
to the variable Z. The variable name is then used as the argument. (esulting in the cha racter "A".
Our next sample program converts the upper case characters in a text string to lower-case using
both ihe ASC and the STR$ functions :
Example
3:
5 WA IT 0
10 INPUT " ENTER MESSAGE" ', M$
20 FOR I = 1 TO LEN {MS)
30 T$ = MIDS (MS. 1 . 1)
40 L
=
ASC (TS)
45
I F (L < 651 OR (L >90) THEN 60
50 TS = CH RS
(L
+
32)
60 PRI NT TS;
70 NEXT I
80
WAIT: PR INT
C.3. I N KEYS
This h.JnCtion takes in any character from the keyboard and stores it in the specif ied variable .
There is no need to press !ENTER! because the character VJill be automaticalfy accepted .
variable
=
INKEYS
During executio n of this statement a prompt character is not displayed unless a previous
PR INT statement is used. The input character is not echoed back to the dis11lay
~nd
the
displ~y
remains unaffected .
Example:
HJ WA IT
Ir
20' A$= INKEY$
30' I F A$ = ·· .. THEN PR INT "NO KEY": GOTO 20'
40' PRINT A$
50' GOTO 20
This function will only accept one character. If more than one is keyed, only the fi rst character
w ill be read in; all others will be ignored .
74
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