How to convert expression to function?

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Jenny Andersen
Jenny Andersen 2019-11-24
评论： Walter Roberson 2019-11-24
Hi, I am trying to convert my expression to a function, but when I remove the informative text I can not call/run the function. How can I fix this?
w=input('Please enter a vector B=[B1 B2 B3]: ');
c2 = [0 B(2) -B(3)];
c3 = [0 -B(2) B(3)];
c2 = B2/norm(B2)
c3 = B3/norm(B3)
disp(' ');
c2=1*B2;
c3=1*-B2;
disp('The following vectors fulfill the demands above:')
disp(' ');
disp(['c2=[' num2str(c2(1)) ',' num2str(c2(2)) ',' num2str(c2(3)) ']'])
disp(['c3=[' num2str(c3(1)) ',' num2str(c3(2)) ',' num2str(c3(3)) ']'])
disp(' ');
I have tried to add the function expression, as follows:
function(c2,c3) = Test(B)
w=input('Please enter a vector B=[B1 B2 B3]: ');
c2 = [0 B(2) -B(3)];
c3 = [0 -B(2) B(3)];
c2 = B2/norm(B2)
c3 = B3/norm(B3)
disp(' ');
c2=1*B2;
c3=1*-B2;
disp('The following vectors fulfill the demands above:')
disp(' ');
disp(['c2=[' num2str(c2(1)) ',' num2str(c2(2)) ',' num2str(c2(3)) ']'])
disp(['c3=[' num2str(c3(1)) ',' num2str(c3(2)) ',' num2str(c3(3)) ']'])
disp(' ');

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回答（1 个）

KALYAN ACHARJYA
KALYAN ACHARJYA 2019-11-24
编辑：KALYAN ACHARJYA 2019-11-24
function [c2,c3]=test()
w=input('Please enter a vector B=[B1 B2 B3]: ');
c2 = [0 B(2) -B(3)];
c3 = [0 -B(2) B(3)];
c2 = B2/norm(B2)
c3 = B3/norm(B3)
disp(' ');
c2=1*B2;
c3=1*-B2;
disp('The following vectors fulfill the demands above:')
disp(' ');
disp(['c2=[' num2str(c2(1)) ',' num2str(c2(2)) ',' num2str(c2(3)) ']'])
disp(['c3=[' num2str(c3(1)) ',' num2str(c3(2)) ',' num2str(c3(3)) ']'])
disp(' ');
end
here C2 and C3 as output arduments, if not required, you can avoid them too to just display
1w.png
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Jenny Andersen
Jenny Andersen 2019-11-24
But if I try to write as follows, I can not call the function or run it since the informative text is removed. I want to be able to run the function and put in values for B=B1,B2,B3 without the informative text in the code.
function [c2,c3]=test(B)
c2 = [0 B(2) -B(3)];
c3 = [0 -B(2) B(3)];
c2 = B2/norm(B2)
c3 = B3/norm(B3)
disp(' ');
c2=1*B2;
c3=1*-B2;
disp(' ');
disp(['c2=[' num2str(c2(1)) ',' num2str(c2(2)) ',' num2str(c2(3)) ']'])
disp(['c3=[' num2str(c3(1)) ',' num2str(c3(2)) ',' num2str(c3(3)) ']'])
disp(' ');
end

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