Diference Between CString & String

questions
5

A STRING is padded with spaces
A CSTRING is null terminated (where a null is a ‘<0>’)

MyString    STRING(4)
MyCSTRING  CSTRING(4)
  CODE
  MyString  = 'Hi'
  MyCSTRING = 'Hi'

If you looked at the bytes, you’d see
MyString has ‘H’, ‘i’, ‘<32>, ‘<32>’ ! note: <32> is a space
MyCstring has ‘H’, ‘i’,’<0>’, UNDEFINED

Also note that the MyCstring(4) can only hold 3 characters as the ‘<0>’ is counted as one
Whereas the MyString(4) can hold 4 characters

Nearly all APIs using CSTRING

A benefit of CSTRINGs is that you don’t need to constantly clip them

LongerCString CSTRING(16)
   CODE
   MyCstring = 'Hi'
   MyCstring = MyCstring & ' There'

Now MyCstring will have ‘Hi There’ followed by a ‘<0>’ and then undefined bytes

On the other hand:

LongerString STRING(15)
  CODE
  LongerString = 'Hi'
  LongerString = LongerString & ' There'

The problem here is that the first line set LongerString to ‘Hi ’
‘Hi’ & ALL(’<32>’,13)
So the 2nd line makes no change, as it just overflows the variable
Instead you need to write

  LongerString = CLIP(LongerString) & ' There'

Now you can put spaces into a CSTRING
So if you write

MyCstring CSTRING(16)
MyString   STRING(15)
  CODE
  MyString = 'Hi'       ! <-- remember this will pad with spaces
  MyCString = MyString  ! <-- copied in the spaces
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