how to create character matrix help

Hi, I created a function called 'myfunction' and lets say the possible outputs of that functions are 'a','b','c' or 'ab'. Then I call this function for another process in a for loop. The code is;

    a=0;

    for k=1:4
    liste(1+a,:)=myfunction(process);
    a=a+1;

    end

The answer must be 'a', 'b', 'c', 'ab' but the answer of this code is just 'a','b','c' and it stops and gives me an error about dimensions. I think the problem occurs because 'ab' is formed of 2 characters. How can I fix that??

Thanks

Answer 1

[per isakson]

    liste = cell(4,1);
    ...
    liste{1+a,1} = myfunction( process);
    ...
    liste = char(liste);

or initialize

     liste = repmat( ' ', [4,2] );

and fill in the output of myfunction (faster but a little bit more tricky )