How to create a checkerboard using fprintf?

I already have the code for the checkerboard. The problem is that the order of the symbols are not correct.

for a=1:10
    for b=1:5
    fprintf('X')
    fprintf('O')
    end
    fprintf('\n')
end

I want it so the first row ends with O and the second row ends with X. Can you please help me on this with a simple solution that does not take a lot of lines.

Answer 1

[Walter Roberson]

Add another for b loop that prints in the other order.

[Rafael]

I tried that, it only returns the same pattern next to the old one with the same order.

[Walter Roberson]

for a=1:10
    for b=1:5
    fprintf('X')
    fprintf('O')
    end
    fprintf('\n')
    for b=1:5
    fprintf('O')
    fprintf('X')
    end
    fprintf('\n')
end

[Rafael]

Nice, thank you.

[Walter Roberson]

You see, it was exactly what I said: adding another for b loop that printed in the other order.