Sharp PC-1403 - Page 100

94
E RROR 1 IN 10 RU N IE HTER I
D is p la y
Inpu t
D o n ' t fo r ge t to pre ss I E N TER I a t t h e e nd of t h e l in e . I f yo u n ow c h a n ge to th e R UN
m o de by p r e ssi n g ~ and e nt er t he RUN c omm a nd , t he f oll ow i ng appears :
110 PR I N T "G OO D " ! - G OO D " !
Di s p l a y
I n p ut
No t i ce t h at th e c u rs o r i s n ow in t he fl a s hi ng bl o c k for m i n d ic at in g t h at i t i s " on top of" a n
ex i sti ng c h a r ac t e r . Type i n :
j 1 0 PR I N T " , H, . E LL 0"
j 10 : P R I NT " H E LL O" OJ
Di s play I np ut
A re y o u s t ill in th e RU N mode ? If so c ha ng e t o th e PR Og r a m m o de .
You n ee d to r eca ll yo u r prog ram i n o r de r t o ed i t i t. Us e th e Up A rrow ( t ) to r e c all your
p ro g r am . I f your p rogra m was c omp l e t e l y e xe cuted, t he OJ key wi ll r ecall th e l as t
li ne o f t he pr og ra m . I f t h ere wa s a n e rr o r i n the p ro gr a m , or if you u sed t he BR E A K
( ~iii ) k ey to s t o p ex ecut i on , the IT] key w i ll r ec a ll th e line i n whic h the e r ro r o r
BREA K o ccurr ed . To m a k e c h ange s i n yo u r pr ogr a m , u s e th e CD ke y to mo v e up i n
your pro g r a m ( re ca ll t h e p r e v i o u s li n e ) an d t he m k ey to move dow n i n you r
p ro g r a m (d ispl ay th e ne xt li n e ). I f h eld do wn , t h e OJ and CD keys wi ll sc roll
v e rt i ca ll y , th a t i s , t h e y w i ll d i s p l a y eac h li n e m o vi ng up o r do wn in y o u r pro g ram .
Yo u w il l re me m ber t h a t t o mo v e t he cu rso r w i t h i n a lin e , y ou u se th e ~ ( r i ght a r ro w)
and .,,.. ( left a rrow ) . U s i ng th e [El k ey , po s iti o n t h e cursor ov e r th e fi rs t c ha r a c t er yo u
wi s h t o c han g e :
S u ppose you w a nt e d to c h an ge th e m e ssa ge th a t yo ur p rogra m w as d i splay i ng , tha t
i s , y ou w a n t ed t o ed i t yo u r p r o g ra m . With a s i ngl e l i n e prog r a m , yo u co ul d j u st rety p e
t he e n t ry , b ut as you deve l op m o r e co m p l e x p r og ra ms , edit in g b ecomes a very
importan t co m pone n t o f yo u r progra mm i ng . L e t' s e d i t t he p r og r am yo u h ave ju s t
w r i tte n .
Example 2-Editing a Program
S in ce th i s i s th e on l y li ne o f t h e pro g ram , t he co m put er w i ll sto p exe cuting at t his po i n t.
P ress I ENTER I t o g e t o ut of th e p r o g ra m a nd r ee nt e r R UN i f y o u · wis h t o e x e c u te the
p rogram aga i n .
Prog r amm i ng the Com p ute r