Each seven-digit phone number corresponds to many separate seven-letter words. Unfortunately, most of these represent unrecognizable juxtapositions of letters. It's possible, however, that the owner of a barber shop would be pleased to know that the shop's telephone number, 424-7288, corresponds to “HAIRCUT." The owner of a liquor store would, no doubt, be delighted to find that the store's telephone number, 233-7226, corresponds to "BEERCAN." A veterinarian with the phone number 738- 2273 would be pleased to know that the number corresponds to the letters "PETCARE." Write a C program that, given a seven-digit number, writes to a file every possible seven-letter word corresponding to that number. There are 2187 (3 to the seventh power) such words. Avoid phone numbers with the digits 0 and 1.
Each seven-digit phone number corresponds to many separate seven-letter words. Unfortunately, most of these represent unrecognizable juxtapositions of letters. It's possible, however, that the owner of a barber shop would be pleased to know that the shop's telephone number, 424-7288, corresponds to “HAIRCUT." The owner of a liquor store would, no doubt, be delighted to find that the store's telephone number, 233-7226, corresponds to "BEERCAN." A veterinarian with the phone number 738- 2273 would be pleased to know that the number corresponds to the letters "PETCARE." Write a C program that, given a seven-digit number, writes to a file every possible seven-letter word corresponding to that number. There are 2187 (3 to the seventh power) such words. Avoid phone numbers with the digits 0 and 1.
Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
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Transcribed Image Text:2. Telephone-Number Word Generator (50)
o Standard telephone keypads contain the digits 0-9. The numbers 2-9 each have
three letters associated with them, as is indicated by the following table:
Digit
Letter
Digit
Letter
2
A B C
6.
M N O
DE F
7
PR S
4
GH I
8
TU V
5
J KL
9.
W X Y
o Many people find it difficult to memorize phone numbers, so they use the
correspondence between digits and letters to develop seven-letter words that
correspond to their phone numbers.
o For example, a person whose telephone number is 686-2377 might use the
correspondence indicated in the above table to develop the seven-letter word
"NUMBERS."
Businesses frequently attempt to get telephone numbers that are easy for their
clients to remember. If a business can advertise a simple word for its customers to
dial, then, no doubt, the business will receive a few more calls.
Each seven-letter word corresponds to exactly one seven-digit telephone number.
The restaurant wishing to increase its take-home business could surely do so with
the number 825-3688 (i.e.,"TAKEOUT").
3.

Transcribed Image Text:Each seven-digit phone number corresponds to many separate seven-letter words.
Unfortunately, most of these represent unrecognizable juxtapositions of letters. It's
possible, however, that the owner of a barber shop would be pleased to know that the
shop's telephone number, 424-7288, corresponds to "HAIRCUT." The owner of a
liquor store would, no doubt, be delighted to find that the store's telephone number,
233-7226, corresponds to "BEERCAN." A veterinarian with the phone number 738-
2273 would be pleased to know that the number corresponds to the letters
"PETCARE."
Write a C program that, given a seven-digit number, writes to a file every possible
seven-letter word corresponding to that number.
o There are 2187 (3 to the seventh power) such words. Avoid phone numbers with the
digits 0 and 1.
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