Hi Akshay,
You can use the readcell function to read a range of values and use the cellfun command to replace the zeros with blanks. You can then use the writecell function to update the excel sheet. For example:
T = readcell('myTable.xls','Range','C16:AC83');
C = cellfun(@(x)x(logical(x)),T,'uni',false);
writecell(C,'myTable.xls','Range','C16:AC83');
Hope this helps!