Try this function which will prety much do the job for you. You may optimize it to preallocate A as well.
function A = cell_format(varargin)
N = length(varargin);
m = max(cellfun(@(x)size(x,2),varargin));
A = cell(0,m);
for i=1:N
v = varargin{i};
[r,c] = size(v);
B = cell(r+1, m);
B{1,1} = inputname(i);
B(1,2:end) = {''};
if isnumeric(v)
B(2:end,1:c) = num2cell(v);
elseif iscell(v)
B(2:end,1:c) = v;
end
if(i>1)
A(end+1,:) = {''};
end
A = [A;B];
end
end
You will call it like this:
cell_format(B,C); % put the list of your variables in the function arguments
