CODEWITHSUNDEEP
matlabfunctionvariables
VOSH
VOSH

Reputation: 123

Function return value in matlab

I have written a function using matlab as follows.

function xout= testfunc(b)
xout = b;
end

I executed this function by giving an value for b as follows.

addpath ('C:\Users\vish\docs\copy');% this is the place of the file location
testfunc(5);

This gives me a variable in my work space ans which is equal to 5,which is the general variable once after all functions are evoked.But the problem is,even though the function is executed properly, when try to use the variable xout it gives the following error message.

addpath ('C:\Users\vish\docs\copy');
testfunc(5);
varout

Undefined function or variable 'varout'.

Any help is highly appreciated.

Upvotes: 2

Views: 852

Answers (1)

AlessioX
AlessioX

Reputation: 3177

By default, if you do not assign a function returned value to a variable, Matlab assigns it to ans (as you already experienced). By calling

testfunc(5)

Matlab will create a variable in the workspace called ans with value 5.

Also the name xout is the output variable name in the body of your function (i.e. in the testfunc script the output variable name is known as xout) but when you call such function you can assign its output to any variable (i.e. with the name you prefer).

myNewOutput=testfunc(5)

and myNewOutput in the workspace will have value 5. Or you can as well use the same name you used in the function, is up to you:

xout=testfunc(5)

and xout will have value 5 as well.

Upvotes: 2

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