How do I add a string to a cell?

I have a 1x4 cell array containing strings, that I got using [num,txt]=xlsread(...). Now I would like to add another string, so that it becomes a 1x5 cell array, so that I can use it as column legends for a 5x5 numeric array that I will export with xlswrite. How can I add that string?

Answer 1

[Thorsten]

 C{1,5} = 'newstring';

[John]

Thanks

Answer 2

[Jan]

C{end + 1} = 'newstring';

Or:

C = cat(2, C, {'newstring'});  % Less efficient

[John]

Thanks