Want to return multiple variables from one function to another. How to do so?

Question

Agam Srivastava 2016-2-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/270178-want-to-return-multiple-variables-from-one-function-to-another-how-to-do-so

评论： Ralf 2016-3-18

I have two functions. One function have commands for execution and one function provides input arguments and displays result. Sample code is like this

function [w,,x,y,z]=fn1(a,b)
  w=a+b;
  x=a-b;
  y=a*b;
  z=a/b;
end
function [a,b]=fn2(w,x,y,z)
  a=5;
  b=3;
  fn1(a,b); %fn1 called
  disp(w);
  disp(x);
  disp(y);
  disp(z);
end

The problem is that the fn1 is not executing and giving error of not enough input arguments for a & b. I am not able to get to how to do so, or any additional command are needed to execute this. Pls help.

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Answer 1

Ralf 2016-2-26

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https://ww2.mathworks.cn/matlabcentral/answers/270178-want-to-return-multiple-variables-from-one-function-to-another-how-to-do-so#answer_211310

在 MATLAB Online 中打开

I am not really sure about what you want to achieve.

At least this code is doing something:

   function [a,b]=fn2()
    a=5;
    b=3;
    [w,x,y,z] = fn1(a,b); %fn1 called
    disp(w);
    disp(x);
    disp(y);
    disp(z);
  end
function [w,x,y,z]=fn1(a,b)
  w=a+b;
  x=a-b;
  y=a*b;
  z=a/b;
end

Simply put it in a file named fn2.m and call fn2() from the command line.

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Agam Srivastava 2016-2-26

编辑：Agam Srivastava 2016-2-26

I tried to implement your solution but it is not working. I have hereby attached my program. Its a basic ac dc load flow. Input argument is provided in newton.m file and results are also displayed in same. Program execution is taking place in dclf.m Basically Etr and Eti value are not getting passed from newton.m to dclf.m Appreciate your help :-)

Ralf 2016-3-18

I am not sure if I understand your problem correctly. I tried your code and it seemed to work fine. The parameters Etr and Eti are passed to dclf.m without any problem.

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