Help! Display Issues

I have asked about this question before, but now I have corrected the mistakes in it and am almost done with it. However, I am having one more problem...I think the code is ok now, but for some reason, it will not display the output that relates to the input of the user...and I don't know what I am doing wrong here. I am very new to MATLAB, and I am just learning about creating functions and calling them into my script, so I am not entirely sure if this is right or not, but I am basing this on the notes I have from my course. Please help!

I was asked to create a script:

Assume that fees are established at an airport parking lot as follows: Fee for the first hour of parking is 25 cents. An additional 25 cents is due if a car is parked in the lot for up to 3 hours. A total of 75 cents is due for any car parked for more than 3 hours, up to 6 hours. One dollar is due if a car remains for more than six hours but not more than 24 hours. One dollar is due for each day or portion of a day thereafter, to a maximum of 7 days. No car may be parked in the lot for more than 7 days. Create a MATLAB script to read the car number (a five digit number) and a total parking time (in hours and minutes), then display the car number and the corresponding fee. The script should print the message 'illegal parking' if the parking time of the car doesnt correspond to any of the categories. The script should end if the input from the user is 99999 for the car number, the function should take, as parameters, the total parking time, perform the calculation of the fee, and return it. The main MATLAB script deals with the user input, calls the function, and displays the corresponding output. The output should look like:

10352 0.50

27665 0.25

32009 illegal parking

13422 2.00

14474 1.00

Here is my function code:

function fee = ParkingFees(t)
for t = 1:168;
    if t == 1
        fee = 0.25;
    elseif (1 < t) && (t < 3)
        fee = 0.50;
    elseif (3 < t) && (t < 6)
        fee = 0.75;
    elseif (6 < t) && (t < 24)
        fee = 1.00;
    elseif (t < 24) && (t < 48)
        fee = 2.00;
    elseif (t < 48) && (t < 72)
        fee = 3.00;
    elseif (t < 72) && (t < 96)
        fee = 4.00;
    elseif (t < 96) && (t < 120)
        fee = 5.00;
    elseif (t < 120) && (t < 144)
        fee = 6.00;
    elseif (t < 144) && (t < 168)
        fee = 7.00;
    else 
        disp('Illegal Parking');
        break
end
end

Here is my main code:

clc
clear
valid = true;
while valid
    disp('Do you want to enter the amount of hours?')
    answer = input('Enter 1 for YES and 0 for NO :');
    if answer == 1
        carNumber = input("Enter the car number: ");
        t = input("Enter the amount of hours parked: ");
        if carNumber >= 99999
            valid = false;
        else
            ParkingFees(t);
        end
    else
        valid = false;
    end
end

[Rik]

You appear to have ignored the advice on the previous thread, so why should we help you now?

[Ashlee Rogers]

I'm sorry, maybe I misunderstood the advice. I thought I just had the output of the function in the wrong place. I apologize. I am new to functions and MATLAB, in general.

Answer 1

[Rik]

doc disp

As for your function:

function fee = ParkingFees(t)
%One line description of this function goes here
%
%function documentation (e.g. explanation of allowed inputs and expected outputs)
if t == 1
    fee = 0.25;
elseif (1 < t) && (t < 3)
    fee = 0.50;
elseif (3 < t) && (t < 6)
    fee = 0.75;
elseif (6 < t) && (t < 24)
    fee = 1.00;
elseif (t < 24) && (t < 48)
    fee = 2.00;
elseif (t < 48) && (t < 72)
    fee = 3.00;
elseif (t < 72) && (t < 96)
    fee = 4.00;
elseif (t < 96) && (t < 120)
    fee = 5.00;
elseif (t < 120) && (t < 144)
    fee = 6.00;
elseif (t < 144) && (t < 168)
    fee = 7.00;
else
    %Pick anything that will allow you to easily check for illegal parking and use disp in the calling function.
    fee=NaN;%or fee=-1;
end
end

[Ashlee Rogers]

Thank you so much for your help. I am doing some research on NaN. :)

[Rik]

The isnan function will probably be helpful.

[Ashlee Rogers]

Thanks again. I have basically been trying to figure out MATLAB on my own even though I am in an intro level course. Its been a rough road. I will take a look at that as well.