How can I add more cells in a vector [closed]

Question

Given the code :

function[p] = addMoreCells(v,n)
% adding zero at the beginning 
k = length(v);
if (k ~= n)
    p = zeros(1,n);
    for m = (n-1):-1:(n-k)
        p(m+1) = v(k-(n-m-1));
    end
else
    p = v;
end
end

I build a new array with n cells and put there 0 , later I add the other cells from v .

It there a built in command that can perform that instead ?

Thanks