Pete's QBASIC Site

Posted: **Mon Jan 23, 2017 7:53 pm**

I have an array, some contain strings and some are empty (no integers). Is there a way to find the empty arrays?

Posted: **Wed Jan 25, 2017 8:49 pm**

LEN can tell you how long a string is in each part of the array. 0 is an empty index.

DIM array$(100)

FOR i = 0 TO 99  'set indices 
    array$(i) = "AA"
NEXT

PRINT array$(50)  'read an index
PRINT LEN(array$(50)) 'display length of string

PRINT LEN(array$)

You will have to read each index using a FOR loop.
LEN can NOT be used on numerical arrays as it will only show the number's
byte size which never changes even for 0.

Pete's QBASIC Site

Searching for empty arrays

Searching for empty arrays

Re: Searching for empty arrays