CISC181 02/17/06 1.25pm

Lecture Notes

A debugging tip.

If you get the error message:



"readNames.cc", line 35: Error: Taking address of the bound function std::ios::eof() const.

If you get this error, it typically means that you making a function
call but forgot the ().

E.g. 
  WRONG:   while (!infile.eof)

  CORRECT:  while (!infile.eof() )

The fact that eof() ends in parentheses means that it is a function call

The fact that I have infile.eof()

  The infile. part means that eof is a "member function" of the
  class to which infile belongs.


An emacs tip... to find the "end of the file" use  escape >

to jump to the start of the file, use escape <


Now... suppose we wanted to print all of the names
that are of maximum length.

For example, in the file, there are three names
of length 15 (counting the space.)    No names
are longer in this list.


Dick Van Dyke
Ben Biro
Anne Martin
Paul Gordon
Adam Maloney
Brandon Bendigo
Nevin Schlabach
Brian Flad
Dave Bones
Eric Dramstad
Burke Wadsworth
Mike Sciblo

The suggestion is to go through the names twice;
the first time we find the length of the longest name;
the second time we print all names that match.

readNames5.cc will do just that...