Untitled

# -------------------------------------------------------------------
# Global variables
# -------------------------------------------------------------------
lastName = ""
firstName = ""
dob = ""
myID = ""

# -------------------------------------------------------------------
# Subprograms
# -------------------------------------------------------------------
# =====> Change the names of the local variables to distinguish them
#        from the global variables with the same name
def makeID (surname, name, birthday):
    namePart = ""
    numberPart = 0

    namePart = surname + name[0]  # Letter part

    # =====> Correct the logic error caused by using the int() function
    #        in the number part calculation rather than using a function
    #        that returns the ASCII value of the character
    for character in birthday:
        numberPart = numberPart + ord (character)

    yourID = namePart + str (numberPart)

    return (yourID)

# =====> Add a procedure, with no parameters, to display a
#        welcome message for the user
def greeting():
    print("Welcome!")
# -------------------------------------------------------------------
# Main program
# -------------------------------------------------------------------
# =====> Call the welcome procedure before taking input from the user
greeting()
# Get last name and first name from the user
surname = input ("Enter your last name: ")
name = input ("Enter your first name: ")

# =====> Convert last name and first name to lowercase after they
#        are inputted by the user
surname=surname.lower()
name=name.lower()
# Get date of birth from the user
birthday = input ("Enter your date of birth (ddmmyyyy): ")

# =====> Check that only the digits 0 to 9 appear in the date of birth
length=birthday.isdigit()
# =====> Call the makeID() function, if the date of birth is valid
if length<=9:
    myID = makeID (surname, name, birthday)
    print (myID)

# =====> Tell the user, if the date of birth is invalid
if length>9:
    print("You can only have 0 to 9 digits in your birthday.")