how to write an updating image file after the update is over

if c=1:4

      c=1
      update(process)

      c=2
      update(process)

      c=3
      update(process)

      c=4
      update(process)
  end

i have split the image into 4 subplots so that it will be easy for comparison

each time the value of c varies the image gets updated

i have used the imwrite code outside the loop, then also the total updated image is not been written in folder

only the image corresponding to condition c=4 is written inside the folder

please kindly help so that i could see some progress in the work

[Image Analyst]

What loop? There is no for statement, only an if statement. And what imwrite()? Copy and paste your code in - don't try to retype it because that introduces errors.

[RAMESH MUNIRATHINAM]

for c = [1 2 3 4];

    anyl = Filt(In,'bt');
    if c == 1
        i = 1;
    elseif c == 2
        i = 2;
    elseif c == 3
        i = 3;
    else
        i = 4;
    end

figure(4);subplot(2,2,i);

imshow(anyl);

imshow gets updated

after this i have used the imwrite command to writing the image any1

but the image of c=4 alone was written in the folder i want to write the figure 4 which contains all 4 images corresponding to the condition