Project P9

This 50-point project must be submitted as a single file to the Moodle submission page for Project P9 by 11:00 PM on Tuesday, 1 November.

The assignment

Reading command line arguments and opening files

Your program will work from a single command line argument that will be stored in main's argv[1]. If main's argc parameter is not two, your program should print an error message to stderr and then return EXIT_FAILURE.

Your program should then use fopen to open a file for reading using the string passed in argv[1] as the file name. If the file open fails, this is, returns NULL, your program should print a useful error message and then return EXIT_FAILURE.

Replacing words

Your program should then read the lines of the file. If an input line contains the word Asheville, then the input line should be written to standard output (stdout) with all occurances of the word Asheville replaced by Raleigh. If an input line does not contain the word Asheville, the line should not be printed.

You may assume that no line has more than 80 characters in writing your program. You may also assume that either the input file has no characters or that the last character of the input file is the '\n' end-of-line.

When Asheville appears within the input file, it is considered a word only if both of the following conditions are satisfied.

  1. Asheville either starts a line or is immediately preceded by a white-space or punctuation character
  2. Asheville either ends a line or is immediately followed by a white-space or punctuation character

Use the functions isspace and ispunch to determine when a character is white-space or punctuation.

Test case?

This is a line
and this one has one Asheville in the middle
  nothing here
This has xAsheville -- should not be printed
  and this with with AshevilleX should not be printed
Asheville starts this one
and this one ends with Asheville
    ,Asheville, NC
   Here an Asheville and there an Asheville  every where

the last line