How to define a criteria for output arguments of a function?

Question

Kalasagarreddi Kottakota 2023-1-11

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1892215-how-to-define-a-criteria-for-output-arguments-of-a-function

回答： Voss 2023-1-11

Consider a sample code schematic as shown below: The following function has 2 options, 1st option will deliver 2 output argurments(d,e) and second option delivers only 1 output argument (f). So what shold I write in the function(........? here?), so that if option 1 is selected 2 outputs are returned and when option 1 is selction only 1 output is returned.

function() = operation(a,b,c,'option')
 
if option ==1
     d = a+b;
     e= b+c;
 end
     
 if option == 2
         f = a+b+c
 end
end

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Answer 1

Voss 2023-1-11

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1892215-how-to-define-a-criteria-for-output-arguments-of-a-function#answer_1146480

在 MATLAB Online 中打开

One way:

function [d,e] = operation(a,b,c,option)
if option == 1
    d = a+b;
    e = b+c;
end
if option == 2
    d = a+b+c;
    e = [];
end
end

Another way:

function varargout = operation(a,b,c,option)
if option == 1
    d = a+b;
    e = b+c;
    varargout = {d,e};
end
if option == 2
    f = a+b+c;
    varargout = {f};
end
end