Sharp PC-1403

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MID$ i s a st ri ng f unct i on w h ich r et u rns a mi d d l e po rt i o n o f t h e string in th e f ir st a rg u men t.
Th e fi rst numeri c a r g u m ent in d i cates t h e fi rs t c ha ra c t er po si tion to be included in the
result. The se cond nu meri c a r gum e nt indi cates t h e numb e r o f characters t ha t are to be
included . M I D$ ( " ABCDEF" , 2 , 3) i s " BCD ".
1 MID$ ( s tr in g e xpres sion , n um . exp . 1, nu m . exp . 2)
LEN is a st r i ng f unc tion wh i c h re t u rns t he le ng th o f t h e s trin g ar gu men t. LEN
" ABCDEF " is 6.
1 LEN st r i ng e x press io n
LEFT$ is a string funct i on whi ch r e t u rn s the l eftm ost pa rt of t h e st ring in the first
argumen t. The numb e r o f cha rac t er s r et urn e d is d ete rm i ne d by th e numeric exp r es-
sion . LEFT$ (" ABCD E F ", 2) i s " AB ".
1 LEFT$ { string express io n, n ume r i c e xp re ss i o n )
CHR$ is a str i ng func t i on that returns t he cha racter wh i c h c o r re sponds to the numeric
character code of its arg um en t. The chart of ch aracte r c od es an d their relationship to
characters is g i ven in Append i x B . CH R$ 6 5 is " A".
~ - ---- - --- ---- ---- - - - - - - - - · - · - · - · · -· -
1 CHR$ n u me ric expr e ss io n
A S C is a st ring fu ncti o n wh i ch r e t urns the num eric c har a cte r code va lu e o f the f i rst
chara c t er in i t s arg u m e n t. T he ch a rt o f ch a r a ct e r c od es an d t he i r relat i o nship to
charac t ers is gi ve n in A pp en di x B . A S C " A" i s 65 .
Th e COMPUTER uses ASC ! I c od e s a n d th eir charac t ers .
1 ASC st r in g e xp res s i o n
String fun cti o ns a re a group o f o pe rat i on s u sed f o r m ani p u la t in g st rings. So m e t a ke a
s tring argum e nt a n d re t urn a numer i c va lu e. S o me t ake a s t ring a rgu ment a nd return a
st ring. So me t a ke a nu me ric va l ue and re t u rn a stri n g. Some t ake a s t r i n g argumen t
and one or two n u me ric arg um e nts a n d r e turn a s t ring . M a n y d ialects of BA S I C requ i re
the a rgum en t of a f u nctio n to be enclo se d in p a renthes e s . The COMPUTER does not
r e quire the s e pare n the s e s, excep t whe n i t i s ne c e ss a ry t o i nd i ca te wha t p art o f a m ore
c o mpl ex exp re ssion i s to be in c l ude d in the a r g u m en t. St r i ng fun cti o n s w ith two or t hree
a rgu m ent s a ll require t he pa r enthese s.
String Functions
Functions
String Functions