Matlab: fprintf, sprintf, sscanf usage

rand('state',0);a=rand(2,2);
s1=num2str(a)
s_s=sprintf('%.10e\n',a)
s1 =
0.95013 0.60684
0.23114 0.48598
s_s =
9.5012928515e-001
2.3113851357e-001
6.0684258354e-001
4.8598246871e-001
fprintf('%.5g\\',a)
0.95013\0.23114\0.60684\0.48598\
s_sscan=sscanf(s_s,'%f',[3,2])
s_sscan =
0.9501 -- 0.4860
0.2311 -- 0
0.6068 -- 0