Function that calculates the amount of money

Question

Lewis HC 2022-12-15

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编辑： Image Analyst 2022-12-15

Write a function called rico that calculates how much money you have. The function must take an input argument that is a four-element row vector specifying the number of pennies, nickels, dimes, and quarters in order of list. The output of the function should be the total value in dollars, my small code is:

function F=rico(pennie,nickel,dime,quarter);

F=1*pennie+5*nickel+10*dime+25*quarter;

dollars=F/100;

end

Thank you for helping me dear friends!

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Answer 1

Steven Lord 2022-12-15

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Your function fails to satisfy this requirement of your homework assignment:

The function must take an input argument that is a four-element row vector specifying the number of pennies, nickels, dimes, and quarters in order of list.

But if you don't want to (or are not allowed to) modify this function, you could write a wrapper function around this one that accepts the four-element row vector your assignment requires the function to take and "unpacks" it to call the function you've written with four separate input arguments. Consider this example and think about how you could adapt it to your assignment.

sz = size(1:10)
sz = 1×2
     1    10
numRows = sz(1)
numRows = 1
numCols = sz(2)
numCols = 10

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Answer 2

Torsten 2022-12-15

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Either change

function F=rico(pennie,nickel,dime,quarter);

to

function dollars=rico(pennie,nickel,dime,quarter);

or change

dollars=F/100;

to

F=F/100;

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Torsten 2022-12-15

移动：Image Analyst 2022-12-15

And your function is supposed to have the form

function dollars = rico(x)

where x is 1 (1x4) row vector with x(1) = pennie,...

This function has 1 input , yours has 4.

Lewis HC 2022-12-15

I'm not sure if I'm right with this code:

thanks for your help!

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Answer 3

Image Analyst 2022-12-15

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No, you're not quite right in your latest code posted. It needs to be

% Test code
% coins = [1,1,1,1];
% dollars = rico(coins)
function dollars = rico(coins)
numPennies = coins(1);
numNickels = coins(2);
% etc. 
% Then the rest of your code, almost as you had it.
F = 1*numPennies+5*numNickels+10*numDimes+25*numQuarters;
dollars=F/100;

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Lewis HC 2022-12-15

Thanks dear friend, I was doing something similar (code attached) but nevertheless it asks me to calculate this: rico[(1,1,1,1)]

Image Analyst 2022-12-15

编辑：Image Analyst 2022-12-15

That's not right. The requirement says "The function must take an input argument that is a four-element row vector" so you need to have ONE input argument, not four. It needs to be as I showed.

Also, you called it incorrectly. The parentheses need to be OUTSIDE the brackets, not inside. It's the brackets that makes your 4 1's into a single 4-element row vector, which is what is wanted.

By the way, I completed and tested my code and it works.

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