How to name rows in array ?

I have the following matrices:

reactions =

         0   30.0000
   40.0000  -30.0000

namb =

    'node 3'
    'node 5'

I need an instruction to make following:

 node 3         0   30.0000
 node 5   40.0000  -30.0000

I'am trying to use sprintf but can't seem to get it to work. Heres what I get:

         node           0     30.00000
            5     40.00000    -30.00000

here some of the code :

% ss is equal to number of names in this example; node 1, node 2, node 3,....node n

for i=1:ss
     label   = 'Reaction Matrix';
     vheader = sprintf(namb{i})
     hheader = 'Force_x Force_y';
     printmat(reactions, label, vheader, hheader)
end

If anybody could head me in the right direction, I would appreciate it.

Answer 1

[Image Analyst]

Try this:

reactions =[...
         0   30.0000
   40.0000  -30.0000]

namb ={...
    'node 3'
    'node 5'}
% To be most general, find out how many rows and columns are in reactions.
[rows, columns] = size(reactions);
fprintf('Reaction Matrix   Force_x     Force_y\n');
for row = 1 : rows
  fprintf('%s            ', namb{row});
  for col = 1 : columns
    fprintf('%8.4f    ', reactions(row, col));
  end
  fprintf('\n');
end

Printed in command window is:

Reaction Matrix   Force_x     Force_y
node 3              0.0000     30.0000    
node 5             40.0000    -30.0000

[Alejandro]

Perfect!! Thank you very much.