>> A=cell(2,2)
A = 
     []     []
     []     []
>> A{1,1}=[1 2 ;2 2]
A = 
    [2x2 double]     []
              []     []
>> A{1,2}=['MATLAB 7.1']
A = 
    [2x2 double]    'MATLAB 7.1'
              []          []
>> A{2,1}=['Tsinghua and Peking']
A = 
             [2x2 double]    'MATLAB 7.1'
    'Tsinghua and Peking'          []
>> A{2,2}=[1+5*i,12-4*i]
A = 
             [2x2 double]    'MATLAB 7.1'    
    'Tsinghua and Peking'    [1x2 double]
>> 
