if 1>2
    disp('1 is bigger than 2')
elseif 2>1
    disp('2 is greater than 1')
elseif 1==2
    disp('2 is equal to 1')
else
    disp('Matlab has gone crazy')
end
if 1>2
    blah
else
    if 2>1
        disp('bah')
    end
end