This is C++ question

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The car wash machine at Squeaky Clean Car Wash requires exactly 3 minutes to complete the regular car wash (including rinse, wax, and dry). A car arrives at the car wash approximately every four minutes (cars don't arrive exactly four minutes apart: that would be easy to program!). Right now Squeaky has two car wash bay to process two cars simultaneously. The owners of the car wash are proposing to add another car wash bay, because they are suspicious that the average wait time for the cars is long enough that they are losing business. Construct a simulation of the car wash to determine the average waiting time for a car at the car wash during a typical day (9 am to 7 pm). Since the arrival time is an average, there is often a waiting line. This can be simulated using a queue as the car that entered first will be processed at first. Implement this problem using linkedlist. 

Car	Arrival Time	Processing Time   	Waiting Time
A	7		
B	6		
D	8		
E	8		
F	11		
G	12		
H	13		
I	9		
J	10		
K	9

What I have tried:

i tried to get the result but faild,kindly help me to solve this question

Posted 13-May-20 20:19pm

Member 14831704

Updated 14-May-20 8:53am

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CPallini · Answer 1 · 2020-05-13T21:46:00

Solution 1

Show us your efforts and ask here just specific questions.
By the way, are you allowed to use the C++ standard library?
You know, it provides (for free!) a linked list[^] implementation.

Posted 13-May-20 21:46pm

CPallini

Comments

TheRealSteveJudge 14-May-20 4:37am

5*

KingofHeartz 2-Jun-20 6:19am

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TheRealSteveJudge 2-Jun-20 7:37am

Which Article do you mean? When did that happen?

KarstenK · Answer 2 · 2020-05-13T21:55:00

The starting point is to make a UML concept of the program flow like the car wash process and the waiting queue of cars. Because you can use C++ you should use classes.

If you are allowed to use libraries than use the queue class and some string class.

Make a lot of output and write some tests. Learn the basics from some tutorial like Learn C++.

Rick York · Answer 3 · 2020-05-14T08:54:00

Solution 3

One tip for you : this will involve random numbers. If you use rand, and it is perfectly acceptable to do so for this, then be careful how you seed it. If you want a repeatedly "random" set of values then always use the same seed when you call srand. That is probably advisable for this problem.

Posted 14-May-20 8:54am

Rick York

Updated 15-May-20 6:07am

v3

Comments

Rick York 14-May-20 14:55pm

or is it RAND_MAX? I can't remember. I need to RTFM.

KarstenK 15-May-20 3:50am

calling srand(time(null)) at program start should solve this issue.

Rick York 15-May-20 3:57am

That is exactly what I was warning about. That will give a random sequence every time and might not be what they want. Seeding with the same value will give a consistent sequence every time and that might be preferred for evaluating adjustments to algorithms and parameters.