Question: 1. Write down a BNF grammar for US phone numbers that use the dash after the area code instead of parentheses around it. 2. Write

1. Write down a BNF grammar for US phone numbers that use the dash after the area code instead of parentheses around it.

2. Write down a BNF grammar for US phone number written in the international style.

3. Write a program that allows the user to input a character string from the keyboard, and tell the user if that string complies with the US phone number grammar - that is, the one from the Practice BNF item, like (757)530-4601. Your program should output the user's string, followed by "YES" if the string is acceptable, and "NO" if it is not. So, an example output from this program could be: (757)555-1234 YES

4. Your program must give the correct (Yes/No) answer when presented with the following phone numbers: 757-555-0025 (757)555-1234 757-555-0000 757.555.1234 757-043-1234 057-555-1234 057-MH5-1234

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

(Please answer both parts of each question) 1. Write down a BNF grammar and State Diagram for US phone numbers that uses the star (*) after the area code instead of parentheses around it. 2. Write...

One variation in how we write down US phone numbers is that we sometimes leave off the parentheses around the area code and instead use a dash after it: 7 5 7 - 5 5 5 - 0 0 0 0 for example. Many...

Hands-on 4 INSTRUCTIONS This hands-on Assignment is worth a paints. The dropbox will be in the Week & module - but you should start working on it now. PREPARATION Be sure youve developed a BNF...

program has to run using BNF grammer PREPARATION Be sure you've developed a BNF grammar that describes the language of phone numbers according to the Practice BNF item. Let's call this the US phone...

PREPARATION Be sure you've developed a BNF grammar that describes the language of phone numbers according to the Practice BNF item. Let's call this the US phone number grammar. One variation in how...

in C++ Please help PREPARATION Be sure you've developed a BNF grammar that describes the language of phone numbers according to the Practice BNF item. Let's call this the US phone number grammar One...

PREPARATION Be sure you've developed a BNF grammar that describes the language of phone numbers according to the Practice BNF item. Let's call this the US phone number grammar One variation in how we...

Please use low level java The solution x 1a-2 (4 pts) Problem In the United States, phone numbers are comprised of a 3-digit arca code followed by a 7-digit e Area codes of 800, 888, 877, 866, 855,...

Chapter 7 Revising and Presenting Your Writing I'm not a very good writer, but I'm an excellent rewriter. James A. Michener Half my life is an act of revision. John Irving Getting Started INT RODU CT...

Barkley, Inc. has the following revenue and cost information. Revenue............................................ $300 per consulting hour Variable costs................................... $170 per...

By using any two aggregate blends gradation (given Moodle page Homework) try to meet any specification again given in Moodle Page. (i.e Wearing Course-Anma-; Binder Course-Binder Type A, B...

5. Solve the following problem by dynamic programming: Maximize Z=x1 x2 x3 subject to x1 + x2 + x3 = 8 where X1, X2, X3 are non-negative integers.

Compared with half a century ago, adoption has become _ _ _ _ _ _ _ _ _ common, but it is more open and acceptabl e , so we probably discuss it _ _ _ _ _ _ _ . fill in the blanks more or much less or...

KEY QUESTION What are the twin problems of the health care industry as viewed by society? How are they related?

LAST WORD What groups benefit and what groups lose from the U.S. sugar subsidy program?

KEY QUESTION Using the concepts in Chapter 19s discussion of consumer behavior, explain how health care insurance results in an overallocation of resources to the health care industry. Use a demand...