Question

This is Python

The program should accept input from the user as either 7-digit phone number or 10-digit. If the user enters 7 characters, the program should automatically add "512" to the beginning of the phone number as the default area code. Dash (hyphen) characters do not count in input character count, but must not be random. If the user enters dashes the total character count must not exceed 12.

The program should not crash if the user enters invalid characters for the phone number (should be letters, digits and/or "-" (hyphen or dash) The first character cannot be a dash, and the last four characters cannot contain any dashes. The user input should not be case sensitive.

If the user enters an invalid characters on input, the program should print an appropriate error message (not just "oops!") and the user should be invited to try again, until they enter a valid phone number or type "quit".

Users should enter as many phone numbers as they want until they type "quit", at which case the program says good-bye and prints the programmer's name.

Many companies use telephone numbers like 555-GET-FOOD so the number is easier for their customers to remember. On a standard telephone, the alphabetic letters are mapped to numbers in the following fashion: A, B, and C = 2 D, E, and F = 3 G, H, and I = 4 J, K, and L = 5 M, N, and 0 = 6 P, Q, R, and S = 7 T, U, and V = 8 W, X, Y, and Z = 9 Write a program that asks the user to enter a 10-character telephone number in the for- mat XXX-XXX-XXXX. The application should display the telephone number with any alphabetic characters that appeared in the original translated to their numeric equiva- lent. For example, if the user enters 555-GET-FOOD, the application should display 555-438-3663.

Answer 1

def convert(n):
if(n=="A" or n=="B" or n=="C"):
num=2
elif(n=="D" or n=="E" or n=="F"):
num=3
elif(n=="G" or n=="H" or n=="I"):
num=4
elif(n=="J" or n=="K" or n=="L"):
num=5
elif(n=="M" or n=="N" or n=="O"):
num=6
elif(n=="P" or n=="Q" or n=="R" or n=="S"):
num=7
elif(n=="T" or n=="U" or n=="V"):
num=8
elif(n=="W" or n=="X" or n=="Y" or n=="Z"):
num=9
else:
num=-1
return num
  
def validate(number):
if number[0]=="-":
print("The first character cannot be a dash")
return False
elif number[len(number)-1]=="-" or number[len(number)-2]=="-" or number[len(number)-3]=="-" or number[len(number)-4]=="-":
print("The last four characters cannot contain any dashes")
return False
  
number=number.replace("-","")
  
if len(number)==10 or len(number)==7:
new_number=""
if(len(number)==7):
new_number="512"
for i in range(0, len(number)):
if(number[i].isalpha()):
new_number+=str(convert(number[i]))
if(int(convert(number[i]))==-1):
print("Number contains invalid characters")
break
else:
new_number+=number[i]
n2=new_number[:3]+"-"+new_number[3:6]+"-"+new_number[6:]
print(n2)
return True
else:
print("Length is not 7 or 10")
return False
  
name=input("Enter your name: ")   
while True:
number=input("Enter 10 character telephone number: ")
if validate(number.upper()):
break
else:
stri =input("Invalid number, Want to try again?or enter quit ")
if(stri=="quit"):
break
print("Goodbye "+name+"!!")

Screenshot of code

def convert(n): if(n=="A" or n=="B" or n=="C"): num=2 elif(n=="D" or n=="E" or n=="F"): num=3 elif(n=="G" or n==" =="H" or n=="I"): num=4 elif(n=="J" or n=="K" or n=="1"): num=5 elif(n=="M" or n==" ="N" or n=="0"): num=6 elif(n=="P" or n=="Q" or n=="R" or n=="s"): num=7 elif(n=="T" or n=="U" or n=="v"): num=8 elif(n=="W" or n=="x" or n=="Y" or n=="Z"): num=9 else: num=-1 return num def validate(number): if number[@]=="-": print("The first character cannot be a dash")

def validate(number): if number[@]=="-": print("The first character cannot be a dash") return false elif number (number)-1)=="-" or number[ (number)-2)=="-" or number[len(number) -3)=="-" or number[len(number)-4)=="-": print("The last four characters cannot contain any dashes") return false number=number.replace("-","") if len(number)==10 or len(number) ==7: new_number="- if( (number)==7): new_number="512" for i in range(@, (number)): if(number[i].isalpha()): new_number+ (convert(number[i])) if(int(convert(number[i]))==-1): print("Number contains invalid characters") break else: new_number+=number[i] n2=new_number[:3]+"-"+new_number(3:6]+"-"+new_number[6:] print(n2) return True else: print("Length is not 7 or 10") return false name=input("Enter your name: ") while True: number=input("Enter 10 character telephone number: ") if validate(number.upper()): break else: stri =input("Invalid number, Want to try again?or enter quit ") if(stri=="quit"): break print("Goodbye "+name+"!!")

Output Screens

input Enter your name: John Enter 10 character telephone number: 555-get-Food 555-438-3663 Goodbye John!!

input Enter your name: Jane Enter 10 character telephone number: 125478-PL- The last four characters cannot contain any dashes Invalid number, Want to try again?or enter quit no Enter 10 character telephone number: 124578A 512-124-5782 Goodbye Jane!!