How can i remove empty cells and print only the nonempty cell in a cell array?

I have two cell arrays. Q1 and Q2

My cell array's are like this :

q1 =   '+ab'  <1x1 cell>  '+BD'

q2 =  <1x1 cell>  '+aC'

My output required :

+ab+BD+aC

Answer 1

[Andrei Bobrov]

strcat(q1(end),q2(end))

ADD

q1 = {'+ab' {} '+BD'};
q2 =  {{} '+aC'};

q = [q1 q2];
out = cat(2,q{:});
out = cat(2,out{:});

or

out = cell2mat([q1{:},q2{:}]);

Answer 2

[David Sanchez]

%%%your cell
q1 = cell(3,1);
q2 = cell(2,1);
q1{1}='+ab';
q1{2} ={};
q1{3}='+BD';
q2{1}={};
q2{2} ='+aC';

code to join the non-empty cells

n=1;
for k=1:numel(q1)
    if ~isempty(q1{k})
    q3{n} = q1{k};
    n=n+1;
    end
end
for k=1:numel(q2)
    if ~isempty(q2{k})
    q3{n} = q2{k};
    n=n+1;
    end
end

q3 = 

      '+ab'    '+BD'    '+aC'

[Andrei Bobrov]

[q1{:},q2{:}]