help clarifying why code isn't working

this is my code, and i will attach in the comments what i am trying to portray. I'm having trouble understanding why it wont work. Thanks

[Charlotte Reed]

Answer 1

[David Hill]

fprintf('%15.4f %15.4f %15.4f %15.4f\n',M(1,:),M(2,:),M(3,:),M(4,:));

[David Hill]

fprintf('%15.4f %15.4f %15.4f %15.4f\n',M');

[Charlotte Reed]

[Charlotte Reed]

[David Hill]

Just copy and paste!

fprintf('%15.4f %15.4f %15.4f %15.4f\n',M');%M transpose (M')

[Walter Roberson]

Not 'M' but just M'

[Charlotte Reed]

[Charlotte Reed]

The only problem is the table lines aren't there

[Walter Roberson]

... so add them in?

L15 = repmat('-', 1, 15);
fprintf('%s %s %s %s\n', L15, L15, L15, L15);