Please help me fix this "Error: Function definitions are not permitted in this context. "

I keep getting the message "Error: Function definitions are not permitted in this context" whenever I try to declare a function.

The code I used was:

function T = truth_table(N) L = 2^N; T = zeros(L,N); for i=1:N temp = [zeros(L/2^i,1); ones(L/2^i,1)]; T(:,i) = repmat(temp,2^(i-1),1); end

(then this message appears)

??? function T = truth_table(N)

    |

Error: Function definitions are not permitted in this context.

I tried copying a simple code from a tutorial that is quite similar to what I used.

function Answer = tenTimes(x)

Answer = 10 * x;

But still, this message appears:

??? function Answer = tenTimes(x) | Error: Function definitions are not permitted in this context.

Answer 1

[Sean de Wolski]

That is how you define the function, not how you call it:

function y = truthtable(x)
%save this as truthtable.m
y = 3*x;

call it from the command line or another function with:

y = truthtable(42);

[hannah]

Yes, I am trying to define a function here. I found this answer somewhere...

"You can only define functions in function files; you can't define them in script files or at the command line."

I think that could be the problem... But I don't know how to go to function files. I only know the command window and script files ( this is the editor I think)...

[Sean de Wolski]

Yes. So open the editor,

and define it as a function by having the first non-comment line be:

function [outputs] = name_of_func(inputs)

%meat of the function

Then save it as name_of_func

and call it. Just like I did above.

[hannah]

It worked. thanks a lot! :)

[Oleg Komarov]

Accept Sean's answer.