Function might not be used error

Question

Ella 2023-3-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1925265-function-might-not-be-used-error

编辑： VBBV 2023-3-8

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

error for the Calctip says function might not be used

2 个评论
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Dyuman Joshi 2023-3-8

How did you run your code/the function?

Ella 2023-3-8

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

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Answer 1

VBBV 2023-3-8

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1925265-function-might-not-be-used-error#answer_1188560

在 MATLAB Online 中打开

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

1 个评论
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VBBV 2023-3-8

编辑：VBBV 2023-3-8

在 MATLAB Online 中打开

It is present in case 2, and instead shown as

amount=bill_tip;% typo

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Answer 2

David Hill 2023-3-8

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1925265-function-might-not-be-used-error#answer_1188550

在 MATLAB Online 中打开

[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