how to use variable from function ?

hello i dont understand how to use variable from function here is exmaple :

function []=my_fun(x)

a=22

end

b=a+2

i want to use a away from the function how to do it ?

Answer 1

[KL]

A function has inputs and outputs, for example

function a =my_fun(x)

a=22+x;

end

Here you are getting 'a' as the output of your function while 'x' is your input. Inside this function you see, you can use 'x'.

Now if you store this as my_fun.m in your directory, on the command line you can use

 a = my_fun(2)

then you will get the output like

 a = 24

since inside the function we add 22 to the input of the function.

[tomer polsky]

i am sorry but I did not understand, I want to get variable a out of the function how to do it ?

[KL]

That's exactly what I wrote there!

 function a =my_fun(x)

In this line, a is the output of the function.