How to use fgetc() with Teensy?

[stella]

How can I use like this code with teensy?

ch = getc(in_file);
  /*convert the one digit integer currently represented as a character to
    an integer(48 == '0')*/

  while(getc(in_file) != '\n');             /* skip to end of line*/

  while (getc(in_file) == '#')              /* skip comment lines */
  {
    while (getc(in_file) != '\n');          /* skip to end of comment line */
  }

[MarkT]

Are you asking how to read characters from a file (if so which library are you using?), or more generally how to do ad-hoc parsing of a stream/file?

I note that code is broken, for instance:

  while(getc(in_file) != '\n');

Will loop forever at the end of a file...