In this lab you will write a program that simulates the dialing of a phone number. The phone number may have either digits, letters, or both. (See sample output below) Here are the letters associated with each digit.
0 5 J K L
1 6 M N O
2 A B C 7 P Q R S
3 D E F 8 T U V
4 G H I 9 W X Y Z
If the phone number entered does not have one of the valid digits or valid letters, display an error message. Write a method to convert the letter to a digit and to determine if it is valid.
A phone number never begins with a 0, so the program should flag an error if such a number is entered. Also a phone number never begins with 555, so the program should flag an error if such a number is entered. A phone number always has a hyphen (-) in the 4th position. Display an error message if it is not. If a hyphen is in any other position, it is considered an invalid digit and display an error message.
Use the switch statement wherever possible. Use Console.Read to input one character at a time from the keyboard buffer. Your output needs to look like mine.
Sample Output from Program - Each 3 lines is one run of the program.
Enter a phone number: s&i-oiem
Digit 2 is invalid
Press any key to continue . . .
Enter a phone number: asn-fgtr
Phone Number Dialed: 276-3487
Press any key to continue . . .
Enter a phone number: 0io-9876
Phone number cannot begin with a 0
Press any key to continue . . .
Enter a phone number: jkl-oiuy
Phone number cannot begin with 555
Press any key to continue . . .
Enter a phone number: asdfghjk
Digit 4 must be a hyphen
Press any key to continue . . .
