Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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8.11 LAB: Car wash

Write a program to calculate the total price for car wash services. A base car wash is $10. A dictionary with each additional service and the corresponding cost has been provided. Two additional services can be selected. A '-' signifies an additional service was not selected. Output all selected services, according to the input order, along with the corresponding costs and then the total price for all car wash services.

Ex: If the input is:

Tire shine Wax

the output is:

ZyCar

Base car wash -- $10 Tire shine -- $2 Wax -- $3 ---- Total price: $15

Ex: If the input is:

Rain repellent -

the output is:

ZyCar Wash Base car wash -- $10 Rain repellent -- $2 ---- Total price: $12

what i have so far (

services = { 'Air freshener' : 1 , 'Rain repellent': 2, 'Tire shine' : 2, 'Wax' : 3, 'Vacuum' : 5 }
base_wash = 10
total = 0

service_choice1 = input()
service_choice2 = input()

''' Type your code here ''')

but i dont know what else i need to add .

9.3 LAB: Exception handling to detect input string vs. integer

The given program reads a list of single-word first names and ages (ending with -1), and outputs that list with the age incremented. The program fails and throws an exception if the second input on a line is a string rather than an integer. At FIXME in the code, add try and except blocks to catch the ValueError exception and output 0 for the age.

Ex: If the input is:

Lee 18 Lua 21 Mary Beth 19 Stu 33 -1

then the output is:

Lee 19 Lua 22 Mary 0 Stu 34

i don know how to do this nor start on it .

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