10.16.1: LAB: Interstate highway numbers (Python)

Primary U.S. interstate highways are numbered 1-99. Odd numbers (like the 5 or 95) go north/south, and evens (like the 10 or 90) go east/west. Auxiliary highways are numbered 100-999, and service the primary highway indicated by the rightmost two digits. Thus, I-405 services I-5, and I-290 services I-90.

Given a highway number, indicate whether it is a primary or auxiliary highway. If auxiliary, indicate what primary highway it serves. Also, indicate if the (primary) highway runs north/south or east/west.

Ex: If the input is:

90

the output is:

I-90 is primary, going east/west.

Ex: If the input is:

290

the output is:

I-290 is auxiliary, serving I-90, going east/west.

Ex: If the input is:

0

the output is:

0 is not a valid interstate highway number.

----------------------------------------------------------------------------

The code I have is:

highway_number = int(input())

if 1 <= highway_number <= 999:

if highway_number <= 99:

if highway_number % 2 == 0:

print("I-" + str(highway_number) + " is primary, going east/west.")

else:

print("I-" + str(highway_number) + " is primary, going north/south.")

else:

primary_number = highway_number

highway_number %= 100

if highway_number % 2 == 0:

print("I-" + str(primary_number) + " is auxiliary, serving I-" + str(highway_number) + ", going east/west.")

else:

print("I-" + str(primary_number) + " is auxiliary, serving I-" + str(highway_number) + ", going north/south.")

else:

print(str(highway_number) + " is not a valid interstate highway number.")

--------------------------------------------------------------------------------------------------------------

How do I get 200 to say it is not a valid interstate highway number?

Question

contestada

Respuesta :

Ototomli Ototomli · Answer 1 · 2021-10-10T09:49:09+02:00

Hope it helps. Thanks

Answer Link

MrRoyal MrRoyal · Answer 2 · 2022-02-15T15:17:42+01:00

The program is an illustration of conditional statements.

The program in Python where comments are used to explain each line is as follows:

highwayNumber = int(input("Highway number: "))

#This checks if the highwayNumber is not between 1 and 999 (inclusive)

if (highwayNumber <1 or highwayNumber > 999):

#If yes, the highwayNumber is invalid

print(str(highwayNumber)+" is not a valid interstate highwayNumber number.")

#If otherwise

else:

#This checks if highwayNumber is less than 100

if (highwayNumber< 100):

if (highwayNumber%2 == 0):

#Even highwayNumber are primary going east/west

print("I-"+str(highwayNumber)+" is primary, going east/west.")

else:

#Odd highwayNumber are primary going north/south

print("I-"+str(highwayNumber)+" is primary, going north/south.")

#Otherwise

else:

if ((highwayNumber%100) % 2 == 0):

#Even highwayNumber are auxiliary going east/west

print("I-"+str(highwayNumber)+" is auxiliary, going east/west.");

else:

#Even highwayNumber are auxiliary going north/south

print("I-"+str(highwayNumber)+" is auxiliary, going north/south.");

Read more about similar programs at:

https://brainly.com/question/14551419