add string to matrix/ array in loop

I wrote this function to get the full paths of all files in a specific folder:

 function [ paths ] = getPaths(folder)
 %GETPATHS Get full path of files containing a given folder

 filelist = dir(folder);
 filenames = {filelist.name};
 paths = zeros(numel(filenames),1);
 for k=3:numel(filenames)
    [pathstr, name, ext] = fileparts(filenames{k});
    current_path = [folder pathstr name ext];
    paths(k) = current_path;
 end
 end

I get the error message:

 ???  In an assignment  A(I) = B, the number of elements in B and
 I must be the same.

 Error in ==> getPaths at 10
    paths(k) = current_path;

How can I add string to matrix/ array in loop?

Answer 1

[Oleg Komarov]

fldr = 'C:\Users\Oleg\Desktop\'; 
s = dir(fldr);
strcat(fldr, {s(~[s.isdir]).name})

[D.]

this works with a '\' between path and file:

fldr = 'C:\Users\Oleg\Desktop\';

s = dir(fldr);

strcat(fldr, '\', {s(~[s.isdir]).name})

thank you!

Answer 2

[Andrei Bobrov]

can so

   ...
   paths = cell(numel(filenames),1);
   for k=3:numel(filenames)
      [pathstr, name, ext] = fileparts(filenames{k});
      paths(k) = {folder pathstr name ext};
   end
   ...