Authors:
Tony Gaddis
Chapter:
More About Strings
Exercise:
Programming Exercises
Question:5 | ISBN:9780132576376 | Edition: 2
Question
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 O- 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 format XXX-XXX-XXXX. The application should display the telephone number with any alphabetic characters that appeared in the original translated to their numeric equivalent. For example, if the user enters 555-GET-FOOD the application should display 555-438-3663.
Answer
def translateToNumeric(number):
numericNum = ""
# Iterate over each character in the number
for char in number:
if char.isalpha(): # Check if the character is alphabetic
char = char.upper() # Convert the character to uppercase
# Translate alphabetic characters to their numeric equivalent
if char >= 'A' and char <= 'C':
char = '2'
elif char >= 'D' and char <= 'F':
char = '3'
elif char >= 'G' and char <= 'I':
char = '4'
elif char >= 'J' and char <= 'L':
char = '5'
elif char >= 'M' and char <= 'O':
char = '6'
elif char >= 'P' and char <= 'S':
char = '7'
elif char >= 'T' and char <= 'V':
char = '8'
elif char >= 'W' and char <= 'Z':
char = '9'
# Append the translated character to the numeric number
numericNum += char
return numericNum
# Get the telephone number from the user
telephoneNum = input("Enter a 10-character telephone number (XXX-XXX-XXXX): ")
# Translate and display the telephone number
numericNum = translateToNumeric(telephoneNum)
print("Translated telephone number:", numericNum)
Executed Output 1:
Enter a 10-character telephone number (XXX-XXX-XXXX): 555-GET-FOOD
Translated telephone number: 555-438-3663
Executed Output 2:
Enter a 10-character telephone number (XXX-XXX-XXXX): GDP-CAR-LOVE
Translated telephone number: 437-227-5683