how to make function that sometimes return output and how to call

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besbesmany besbesmany
评论： besbesmany besbesmany 2017-10-22
  • b sometimes returned from myfn and sometimes not returned, so how to write the function that may retrun b
function [a,b] = myfn(x,y)
a
if(x=y)
b
end
  • also how to call myfn from the main file if b is not returned
[a,b]=myfn(x,y)

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采纳的回答

Stephen23
Stephen23 2017-10-22
Simplest solution: set a default output value:
function [a,b] = myfn(x,y)
a = 1;
b = [];
if(x=y)
b = 2;
end
end

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