how do i save and load this file into a human readable format(asked by question)

      x = input(' Enter any integer in the range betwwen 0 to 255,x:');

      if (x<0)
          disp('-1')
      elseif (x>255)
          disp('error.Value too big')
      else
          fprintf('<%d>\n',x)
      end
      disp('mcheck');
      save mcheck.m;
      clear all;
      load mcheck.m;

[Geoff Hayes]

Ernest - what exactly do you want to save to file, the integer x or something else?

[ernest]

sorry for the late reply. this is the question i am attempting.maybe it could help you understand what it needs..."4. Write a script, which first asks the user to input an integer number between 0 and 255, then outputs the number to the screen between the characters '<' and '>', and calls an user function ‘mcheck’ (as described below) to check the number entered. The input, display and check operation should be repeated for 10 times. After the 10th iteration, the script should save all the input numbers to a text file in a human readable format. The user function ‘mcheck’ mentioned above will do the following check for each number entered: if the number is in the range of 0~255, no change is needed; if the number entered is bigger than 255, the script should print a message “error: Value too big.” to the screen, but make no change to the value of the number; if a negative number is entered, no matter what is the exact number, the script should convert it to . "

[Geoff Hayes]

First, update your above code to iterate the ten times and collect the user input into an array. Once you have done that, and applied mcheck to each input, then write the array to file.