这个作业是用C++完成填字游戏检查器

CSCI-1200 Data Structures

Homework 1 — Crossword Checker

Your task for this assignment is to write a tool to help confirm that a filled in crossword puzzle contains real
English words by picking out the letters from the board and checking them against a list of allowed words.
This tool could be useful both to crossword puzzle solvers and also to crossword puzzle designers.
NOTE: We will not be tackling the much harder problem of matching words to clues or generating clues for
words, which would requires a large vocabulary, clever use of puns, knowledge of pop culture, etc. and is an
active area of Artificial Intelligence (AI) and Natural Language Processing (NLP) research.
Command Line Arguments
To check the validity of a filled-in crossword puzzle board, your program will expect two required arguments
and one optional argument. The first argument is the puzzle filename containing the grid of characters in
the proposed board. The second argument is the dictionary filename containing all of the allowed words. If
provided, the third argument will specify how to display the puzzle using ASCII art.

You must exactly follow the specifications for the command line and output to ensure you receive full credit
for your work. We provide sample input and output files on the course website, and the automated testing
and autograding on Submitty will also help you check your work. We recommend starting with the lower
numbered puzzles first, and working to higher numbered puzzles as you debug your work.
The file puzzle6.txt contains the filled-in crossword puzzle for the example above. The black squares of
the board are represented with the number character, ’#’.
a##b
pale
e#ad
The file of allowed words used in the example command lines is the contents of the Ubuntu Linux American
English dictionary – a version of this file may already be on your computer in /usr/share/dict/words.
This file is simple plaintext with one word per line. You are encouraged to copy and add or remove words
from this file or create a new file with alternate words as you test your program. Note that the allowed words
file may contain words with lowercase and uppercase letters. Crossword puzzles are usually case insensitive,
so your program should ignore capitalization when checking if a word is on the accepted list. The allowed
words file may include words containing punctuation characters – you should ignore those words.
Note on Error Checking
You should implement simple error checking to ensure that the arguments provided are appropriate. You
should also check to make sure that the files exist and your program can successfully open and read the
contents. Your program should exit gracefully with a useful error message sent to std::cerr, Standard
Error (STDERR), if there is a problem with the arguments or the filenames.
Note on Viewing ASCII Art & Plaintext Files
Make sure you’re using a good file viewer/editor to look at these files. It should correctly display the
UNIX/GNU Linux ’\n’ line ending. Use one of the “Plaintext & Code Viewers/Editors” listed on the “C++
Development” page. Don’t attempt use the Windows line ending character ’\m’ or ’\r’ because this will fail
validation tests on Submitty.
Basic Output
If all of the horizontal or vertical sequences of 2 or more contiguous white box letters are present in the
acceptable words file and the optional third argument is not provided, then your program should print this
simple success message to std::cout, Standard Output (STDOUT):
valid crossword puzzle
If one or more of the letter sequences is not present in the acceptable words file, then your program should
print all of those non-words to std::cout, Standard Output (STDOUT). Your lines of your output may
be in a different order, but the output otherwise must match exactly. Here is the expected output for the
provided input file puzzle2.txt:
‘abcd’ is not a word
‘aei’ is not a word
‘bfj’ is not a word
‘cgk’ is not a word
‘dhl’ is not a word
‘efgh’ is not a word
‘ijkl’ is not a word
2
ASCII Art Output
If a third argument is specified, you will print an ASCII art
representation of the empty puzzle board. The output for the
–print option is shown on the right. For full credit, your output
must match this sample output exactly.
+—-+—-+—-+—-+
| |####|####| |
| |####|####| |
+—-+—-+—-+—-+
| | | | |
| | | | |
+—-+—-+—-+—-+
| |####| | |
| |####| | |
+—-+—-+—-+—-+ +—-+—-+—-+—-+
| |####|####| |
| |####|####| |
+—-+—-+—-+—-+
| | | | |
| | | | |
+—-+—-+—-+—-+
| |####| | |
| |####| | |
+—-+—-+—-+—-+
(1,0) ACROSS pale
(2,2) ACROSS ad
(0,0) DOWN ape
(0,3) DOWN bed
(1,2) DOWN la
The next step is to prepare a template for the list of word clues. When
the –print_coordinates option is specified each clue is listed with the
position (row and column) of the starting letter of the word and the word
direction. This output is shown to the left. Note that the upper left
corner of the puzzle grid is position (0,0). It’s ok if your words appear in
a different order than this sample output, but the output must otherwise
match exactly.
This output can be used by a crossword puzzle designer, who would take
this output and replace the words with clever clues (something probably
still best done by humans).
Extra Credit: Numbering the Start of Each Word
The final (optional) step for this assignment is to use the traditional
crossword puzzle numbering scheme instead of coordinates. The
numbers should both be placed in the puzzle grid and used
in the word clues list. The output when the user specifies
“–print_numbered” mode on the command line is shown on the
right:
+—-+—-+—-+—-+
|1 |####|####|2 |
| |####|####| |
+—-+—-+—-+—-+
|3 | |4 | |
| | | | |
+—-+—-+—-+—-+
| |####|5 | |
| |####| | |
+—-+—-+—-+—-+
ACROSS
3 pale
5 ad
DOWN
1 ape
2 bed