Save an array of strings as cell

Hi everyone! I'm really struggling with this one, so I would really appreciate some help. I'm developing a script that works with several folders. Therefore it first ask the user to select them. I'm using Matlab 2015 and, as far as I know, there is no way of saving an array of strings, so I'm trying to use a cell as follows:

    directory{n}=[uigetdir('default path','text to show on window'), n]; %n is the loop for each folder

Later on the code I have to cd to each folder:

    cd(directory{n});

but I'm getting the error "Cannot CD to (path) (Directory access failure)." Trying to solve it I saw that when I extract the string from the cell, it has a blank space at the end of it. Say for example I do this:

    A=uigetdir   %'D:\Desktop' selected
    directory{n}=[uigetdir, n];    %'D:\Desktop' also selected
    B=directory{n};

A will be a 1x10 char while B will end being a 1x11 ('D:\Desktop '). Anyone knows why it adds this space at the end. Also, trying not to loose to much time, I just tried deleting this blank space following this solutions:

https://es.mathworks.com/matlabcentral/answers/94151-how-do-i-remove-leading-and-trailing-spaces-from-a-string

https://es.mathworks.com/matlabcentral/answers/43638-remove-spacing-in-a-string

But unfortunately none of them have solve it. The string still has a blank space at the end.

The full code of the while loop is:

n=0;
answer='s';
while strcmpi(answer,'s')
    n=n+1;
    text=['Seleccionar ubicación del set de capturas ',num2str(n)];
    directory{n}=[uigetdir('D:\BIBLIOTECA\INVESTIGACION\Ultrasonidos\3_PRUEBAS',text), n];
    channel(n)=input('¿En que canal está la señal a analizar? [1,2,3,4]\n');
    while channel(n)>4 | channel(n)<1   
        disp('Respuesta incorrecta');
        channel(n)=input('¿En que canal está la señal a analizar? [1,2,3,4]\n');
    end
    answer=input('¿Quiere añadir más ensayos? [s,n]\n ','s');    
    while strcmpi(answer,'s')~=true & strcmpi(answer,'n')~=true  
        disp('Respuesta incorrecta');
        answer=input('¿Quiere añadir más ensayos? [s,n]\n ','s'); 
    end
end

[Stephen23]

"Anyone knows why it adds this space at the end"

Because you put it there:

[uigetdir, n]

(most likely it is not a space, but some non-printing control character).

[H AM]

OMG Stephen, you are absolutely right, I was already blind. Should be just:

directory{n}=uigetdir('D:\BIBLIOTECA\INVESTIGACION\Ultrasonidos\3_PRUEBAS',text);

The other was from an older version and I just didn't realized. I fell really stupid right now. Many thanks!