Sharp PC-1500 - More on Character Strings; Dimensioni Ng Strings; Concatenation

A ll and more about Sharp PC-1500 at http://www.PC-1500.info
col um n 1
col u mn 3 column 4
row 0 T (0. 01 T 10. 1)
T
(0 , 21 T 1 0, 3)
rO\;\l
T 11. 01
T 11 , 1) T 11, 21 T I 1. 3)
T
12. 01
T (2, 1)
T (2. 21
T 12. 3)
NOTE: T ... vo ·d i mcns i ona l ar rays c an rapidly cat up sto rage spa ce . For examp le, an array with 25
r oi.vs and 35 columns uses 87 5 storage l ocat ions!
Arra ys arc very powerf ul prog ra mmi ng too ls. For a m or e co rn plete tr eatmerl( of ar r·ays, we
recomme nd sup pl e mentary r ead ing.
B. MORE ON CHARACTER STRINGS
B.1. D IMe ns ioni ng St rings
Ch aracter st r'i n gs are linli ted. by de fault, to sixt ee n characters in l en g th . By dimensioning a
character stri ng it is possible to cr eate a st ri ng \Vhose l engt h is up to 80 cha r acte r s. Reduc tio ns
in s tr ing l engt h, to conserve memory space. arc al so possihl e.
The le ngth of a st ri ng is spec ifi ed in the DIMension stat ement as follows:
DIM va ri ab le·narne (bou nd)* length
whet e:
varia blc ·namc is th e name of t he ch ar ac t er string array,
hound is the max im um sub scri pt of the array,
length is the le ngt h of each str ing w ith in the .arr.av.
If
only one st ring is nee de d . an array \ vi th one el ement {subscrip ted as el ement zero) may be
specified to conserve memo ry space . This is i llustrated by t he follo\ •Ji ng declaration of a 26
ch a tacter st ri ng;
DIM AS (0) * 26
B.2. Cone<1 ten at ion
Se
ve ral cha r ac te r st rings (or char acters within c ha rac tcr ·vari ablc s) can be j oined to f orm a single
string.
TI1is "ad di ng" of chara cte r st ri ngs is called "co n catenation". The form for c onca t ena tion
is:
vari ab le =
Examp le 1:
charactcr·strin9 + charac t er · st ring
character·var iab le character ·Variable
10 S$ = "SUPER"
20 TS = S$ + " MA N"
30 PR IN T TS
70
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