Trying to use function ,didnt work?

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Bastian
Bastian 2023-12-12
编辑： Matt J 2023-12-12
function [Delta]= finddeflexion(Length)
E= 4.2*(10.^10);
I = 1*(10.^-5);
W = 8500;
prompt = "What is the length of the blade? ";
Length = input(prompt);
Delta = W*(Length^3)/(8*E*I);
when i typed it like this it gave me error sayin to type the function part like so and i dont understand why
function [Delta]= finddeflexion(~)
the code then works fine
  2 个评论
Mann Baidi
Mann Baidi 2023-12-12
Why are you having "Length" as function parameter?
Bastian
Bastian 2023-12-12
not sure what you mean by function parameter

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Matt J
Matt J 2023-12-12
when i typed it like this it gave me error
I doubt it gave you an error. It certainly doesn't give me one.
You probably got a Code Analyzer warning saying that the input argument "Length" is not being used. If you want it to be used remove the line which overwrites it:
function [Delta]= finddeflexion(Length)
E= 4.2*(10.^10);
I = 1*(10.^-5);
W = 8500;
prompt = "What is the length of the blade? ";
%Length = input(prompt);
Delta = W*(Length^3)/(8*E*I);
end
  10 个评论
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Bastian
Bastian 2023-12-12
if you look at these images you will understand what i am trying to say
i want it s when i run it it displays as so
[Delta]= finddeflexion(Length)
and then let me the user type in the value for length
in first screen shot i have underlined what i mean by options when running, it seems that i have to put in value first like so, instead of just pressing run and changing the value of length in command window
Matt J
Matt J 2023-12-12
编辑：Matt J 2023-12-12
instead of just pressing run and changing the value of length in command window
Yes, we removed the line where you are prompted for the Length from the command window.
If you want to set the Length variable in the command window, then you should put that line back in, but remove "Length" from the function signautre line
function [Delta]= finddeflexion() %or finddeflexion(~)
E= 4.2*(10.^10);
I = 1*(10.^-5);
W = 8500;
prompt = "What is the length of the blade? ";
Length = input(prompt); %<--- put this line back in
Delta = W*(Length^3)/(8*E*I);
end

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