fprintf
% write/print formatted strings from cell array (to stdout fid=1)
C={'A1','A2','A3'}
C
{'A1'} {'A2'} {'A3'}
fprintf(1,'%s\n',C{:})
A1
A2
A3
% print to text file "sampleIDs.txt" (fid - file identifier)
fid = fopen('sampleIDs.txt','w');
fprintf(fid,'%s\n',C{:})
fclose(fid);
% add leading zeros
x = [2, 4, 8, 16, 32, 64, 128]
fprintf(1,'Samples: %03d\n', x ) % print 3 digit numbers
Samples: 002
Samples: 004
Samples: 008
Samples: 016
Samples: 032
Samples: 064
Samples: 128