MATLAB: Problem with reading and writing image

Question

NumberOfimages=4;       %chose the number of images you want to give input
prefix_image='data (';    %change the desired input image name here only
fileformat=').tif';       %change the desired input image format here only
for num=1:NumberOfimages
  I = imread(strcat(prefix_image,num2str(num),fileformat)); 
  fileName = sprintf('C:\\result\\%02d',num);
  imwrite (I, 'fileName', 'jpg');
end

i tried this code in order to read and save images,although the reading part worked well,the saving part doesn't work,can any one plz help me? my images are: data (1),data (2),…

Answer 1

It's

imwrite (I, fileName, 'jpg');

or

imwrite (I, [fileName '.jpg']);

or

fileName = sprintf('C:\\result\\%02d.jpg',num);
imwrite (I, fileName);