% ca1.m
a=sparse(eye(3));
b=[1 2 ; 3 4];
c=cell(2,2)
c{1,1} =a;
c{2,1} = 21;
c{1,2} = 'cs101';
c{2,2} = a;
c{2,2}(3,2)=20;
celldisp(c);
