Function might not be used error

function[error, tip, amount]=CalcTip(bill,serv)

%return error code of zero

error=0;

%cal tip based on level of service using switch..

switch serv

case 1

%poor(5 percent no min)

tip=(5/100)*bill;

amount=tip+bill;

case 2

%fair(10 percent min of £1)

tip=(10/100)*bill;

if tip<1

tip=1;

end

amount=bill_tip;

case 3

%good(15 percent min of £2)

tip=(15/100)*bill;

if tip<2

tip=2;

end

amount=bill+tip;

otherwise

tip=0;

amount=bill;

error=1; %because we now have an error

end

end

error for the Calctip says function might not be used

[Dyuman Joshi]

How did you run your code/the function?

[Ella]

I saved it as CalcTip.m then put [error,tip,amount]=CalcTip(50,2) into Command Window

Answer 1

[VBBV]

amount=bill-tip;% typo with operator

There is a typo for the operator in the above line which presumably makes Matlab think it as unused function

[VBBV]

It is present in case 2, and instead shown as

amount=bill_tip;% typo

Answer 2

[David Hill]

[e,t,a]=CalcTip(100,3)

e = 0

t = 15

a = 115

[e,t,a]=CalcTip(100,4)

e = 1

t = 0

a = 100

[e,t,a]=CalcTip(100,5)

e = 1

t = 0

a = 100

[e,t,a]=CalcTip(100,2)

e = 0

t = 10

a = 110

function[error, tip, amount]=CalcTip(bill,serv) 
%return error code of zero 
error=0;
%cal tip based on level of service using switch..
switch serv
    case 1
        %poor(5 percent no min)
        tip=(5/100)*bill;
        amount=tip+bill;
    case 2 
        %fair(10 percent min of £1)
        tip=(10/100)*bill;
        if tip<1
            tip=1;
        end 
        amount=bill+tip;%bill+tip
    case 3 
        %good(15 percent min of £2)
        tip=(15/100)*bill;
        if tip<2
            tip=2;
        end
        amount=bill+tip;
    otherwise 
        tip=0;
        amount=bill;
        error=1; %because we now have an error 
end 
end