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' This program does not work for a reason that escapes me.
' all variable assignations have been simplified from my
' original version to aid reading/debugging. Reading
' back of the array just doesn't seem to work and with
' illogical patterns. The IOS device used is for programming
' is an iPad Pro with 128gb (top model).
' Use of OPTION BASE(x) does not seem to help.
' Note: in references to 'x,x' in notes 'x' is not a variable!
' Any feedback from the forum would be appreciated.


DIM A$(63,4) ' main DATA reference array

arraychar=62 ' primary characters
optchar=3 ' sub characters
counter=0

' **** Read data ****

FOR loop1=0 TO arraychar
FOR loop2=0 TO optchar
READ A$(loop1,loop2)
NEXT loop2
NEXT loop1

' ****

' Print out all the READ data.

TEXT CLEAR

FOR loop3=0 TO arraychar

PRINT A$(loop3,0);" ";A$(loop3,1);" ";A$(loop3,2);" ";A$(loop3,3)

NEXT loop3

' **** Input character string to array ****

INPUT "Enter a word? (up to 12 characters for testing)":userword$

capword$=CAPSTR$(userword$) ' capitalise input string
wordlength=(LEN(userword$))
DIM wordarray$(wordlength+1)

' ****

FOR loop4=0 TO wordlength-1
wordletter$=SUBSTR$(userword$,loop4,loop4)
wordarray$(loop4)=wordletter$
NEXT loop4

' ****

PRINT ! PRINT
PRINT userword$ ' input string
PRINT capword$ ' capitalised input string

PRINT
PRINT wordlength; "characters" ' length of input string
PRINT

' ****

FOR loop5=0 TO wordlength-1

PRINT wordarray$(loop5);

NEXT loop5

PRINT ! PRINT

' **** Create 2nd array based on input string ****

DIM varified$(wordlength+1,4)

FOR loop5=0 TO wordlength ' loop once for each character of input string
FOR loop6=0 TO arraychar ' loop x number of data arrays

IF wordarray$(counter)=A$(loop6,0) THEN ' test input character against first of each data array

varified$(loop5,0)=A$(loop6,0) ' if character matches DATA (A$(x,0)) then
varified$(loop5,1)=A$(loop6,1) ' assign A$(x,0),(x,1),(x,2),(x,3) to varified$(x,x)
varified$(loop5,2)=A$(loop6,2)
varified$(loop5,3)=A$(loop6,3)

PRINT varified$(loop5,0); ' print to confirm conversion/data read
PRINT varified$(loop5,1);
PRINT varified$(loop5,2);
PRINT varified$(loop5,3)

counter +=1

ENDIF

NEXT loop6
NEXT loop5

' ****

' Read back data from varified(x,x). Notice characters
' that are missing. If you input a different string
' the letters that are missing could be
' ones that previously printed and vice versa. There
' appears to be no consistent pattern as to which are
' printed and which aren't. The only consistency is
' that a given input will always produce the same
' output pattern. I have removed lines that individally
' did the same as loop 7, the result was always idendtical
' so the loop is okay.

PRINT ! PRINT

FOR loop7=0 TO wordlength
PRINT varified$(loop7,0);
PRINT varified$(loop7,1);
PRINT varified$(loop7,2);
PRINT varified$(loop7,3)
NEXT loop7

END

DATA "~","1","2","3"
DATA "A","1","2","3"
DATA "B","1","2","3"
DATA "C","1","2","3"
DATA "D","1","2","3"
DATA "E","1","2","3"
DATA "F","1","2","3"
DATA "G","1","2","3"
DATA "H","1","2","3"
DATA "I","1","2","3"
DATA "J","1","2","3"
DATA "K","1","2","3"
DATA "L","1","2","3"
DATA "M","1","2","3"
DATA "N","1","2","3"
DATA "O","1","2","3"
DATA "P","1","2","3"
DATA "Q","1","2","3"
DATA "R","1","2","3"
DATA "S","1","2","3"
DATA "T","1","2","3"
DATA "U","1","2","3"
DATA "V","1","2","3"
DATA "W","1","2","3"
DATA "X","1","2","3"
DATA "Y","1","2","3"
DATA "Z","1","2","3"
DATA "a","1","2","3"
DATA "b","1","2","3"
DATA "c","1","2","3"
DATA "d","1","2","3"
DATA "e","1","2","3"
DATA "f","1","2","3"
DATA "g","1","2","3"
DATA "h","1","2","3"
DATA "i","1","2","3"
DATA "j","1","2","3"
DATA "k","1","2","3"
DATA "l","1","2","3"
DATA "m","1","2","3"
DATA "n","1","2","3"
DATA "o","1","2","3"
DATA "p","1","2","3"
DATA "q","1","2","3"
DATA "r","1","2","3"
DATA "s","1","2","3"
DATA "t","1","2","3"
DATA "u","1","2","3"
DATA "v","1","2","3"
DATA "w","1","2","3"
DATA "x","1","2","3"
DATA "y","1","2","3"
DATA "z","1","2","3"
DATA "1","1","2","3"
DATA "2","1","2","3"
DATA "3","1","2","3"
DATA "4","1","2","3"
DATA "5","1","2","3"
DATA "6","1","2","3"
DATA "7","1","2","3"
DATA "8","1","2","3"
DATA "9","1","2","3"
DATA "0","1","2","3"

If the expected result is like the attached
screenshot, then just replace your counter
variable with loop5 variable...
(Upps Debug Pause now removed)

Thanks Operator, That works though I don't understand why the counter variable doesn't or why it causes such erratic output. It's obviously not needed so I can now proceed. a big, big, THANK YOU!

welcome

You may leave the counter variable, but
then you will need to add: break loop6
just after: counter += 1

Your counter will/may count more then
once in one cpl. loop6 iteration. For
example if the input was: "Testing"
loop5 = 0, counter = 0
when T is found
loop5 = 0, counter = 1
now that counter is 1 the next char is e
and it will be found in the same iteration
of the inner loop (loop6)
when e is found
loop5 = 0, counter = 2
so now the first element of the varified$
array (T) is overwritten with (e)
....
loop5 <> counter

Use cmd.: debug pause just after counter += 1
to see...