Strings

Strings are "Schema types" in GNU Pascal which is something more complicated than Borland-style strings. For variables, you cannot specify just String as a type (always specify the maximum length); for parameters you can. There is no 255 length limit. According to Extended Pascal, the maximum string length must be in (parantheses); GNU Pascal accepts [brackets], however.

For more about Strings and Schema types see See section GNU Pascal extensions and See section About Pascal and Extended Pascal languages.

String-handling functions (see See section GNU Pascal extensions) are different in both dialects but can approximately be mapped on each other:

  Borland Pascal          GNU Pascal

  length                  length
  Pos                     Index
  Str                     WriteStr
  Val                     ReadStr
  Copy                    SubStr, MyStr [ 2..7 ]
  MyStr [ 0 ]:= #7;       Trim
    -                     EQ, NE, LT, LE, GT, GE
  Insert                    -
  Delete                    -

It should not be difficult to write a compatibility Unit--if you do so, please send it to us!