add the particular column in the for loop

hello friends, i wish to sum the column of the array which are present in the for loop

suppose iteration 1 is running and i get a single column from the array 
next iteration 2 i get another column from array and add both column and store at the place
in iteration 3 i get another column from array and add this column with previous resulted column(adding in iteration 2) and now store the result at same place where iteration 2 result was stored

Answer 1

[Jan]

What about:

data   = rand(10, 10);
result = sum(data, 2);

This is the sum of the columns.

[Nobel Mondal]

Yes, this is way more efficient.

Answer 2

[Nobel Mondal]

Are you looking for something like this?

dataMatrix = [1 2 3; 4 5 6; 7 8 9];
outPut = zeros(size(dataMatrix,2),1);

for i=1:size(dataMatrix,2)
  outPut = outPut + dataMatrix(:,i);
end