Write a function called fare that computes the bus fare one must pay in a given city based on the distance travelled. Here is how the fare is calculated: the first mile is $2. Each additional mile up to a total trip distance of 10 miles is 25 cents.

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function a = fare(dist,age)
x=round(dist);
if x>=0 && x<=1
fare=2;
if x>1 && x<=10
fare=2+(0.25*(x-1));
if x>10
fare=4.25+(0.1*(x-10));
end
end
end
if age<=18 || age>=60
a=0.8*fare;
else
a=fare;
end
end

Respuestas (4)

dpb
dpb el 16 de Jun. de 2018
function a = fare(dist,age) ... fare=2; ...
Unlike Fortran, the return value in a Matlab function is not stored in the function as a variable of the function name but one uses the defined return variable instead. You defined that as a in the function declaration.
I'd pick something a little more meaningful than just a, though, although that's not your problem.
a=2;
etc., will fix that reference issue. Maybe use
function cost = fare(dist,age)
or somesuch similar variable???
Is the distance actually rounded in the fare calculation or is it for any fraction of a mile over the previous full mile? The latter would seem more typical if not going to use actual mileage to nearest tenth or whatever...
  2 comentarios
Stephen23
Stephen23 el 16 de Jun. de 2018
Sudarshan Agrawal's "Answer" moved here:
I m still receiving the same problem. But the code is working for fare(0.2,67) only. the distance is rounded off to the nearest integer for the calculation
dpb
dpb el 16 de Jun. de 2018
Editada: dpb el 16 de Jun. de 2018
Yes, because when you used fare as a variable inside the function you aliased the function fare so it no longer is visible as a function; now it is a local variable.
As I said, "you can't do that!", Matlab is not Fortran.
But what are the expected answers for
fare(1.2,67)
fare(1.7,67)
??

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Sudarshan Agrawal
Sudarshan Agrawal el 17 de Jun. de 2018
Editada: Walter Roberson el 17 de Jun. de 2018
function cost = fare(dist,age)
x=round(dist);
if x>=0 && x<=1
f=2;
if x>1 && x<=10
f=2+(0.25*(x-1));
if x>=11
f=4.25+(0.1*(x-10));
end
end
end
if age<=18 || age>=60
cost=0.8*f;
else
cost=f;
end
end
The new code I tried!! It is working for fare(1.2,67) but not for fare(1.7,67).
  4 comentarios
Walter Roberson
Walter Roberson el 17 de Jun. de 2018
With the structure you had, the test x>1&&x<=10 could only be made if x>=0&x<=1 had succeeded. The scope of the successful test if the first if extends until the matching "end" or "else" or "elseif"

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Sarthak Shukrey
Sarthak Shukrey el 18 de Jun. de 2019
my question doesnt demand for any 'if or else' statements , what will be the solution then ? TIA

Nimra Mubeen
Nimra Mubeen el 5 de Sept. de 2019
function fare =taxi_fare(d,t)
fare=5+(ceil(d-1)*2)+(ceil(t)*.25)

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