need to save different data for different intervals using timers in matlab

Question

below is the program which generates random data and converts it into 0's and 1's and saves them in .dat file in matlab every 5 minutes every time it overwrites the data with existing data how to generate different data for every 5 minutes and then save each data seperately? is it possible?

while(1)
   tic   
   A = rand(1,5)
   disp(A);
   File_id = fopen('delay.dat', 'w');
   fwrite(File_id, A, 'double'); 
   fclose(File_id);
   File_id = fopen('test.dat', 'r');
   A = fread(File_id,'double=>int8'); 
   fclose(File_id);
   disp(A);
   T=toc;
   pause(300-T)
end

Answer 1

As Mohammad said in the comments, you should change the name of the output file in each iteration:

i = 0;
while(1)
   i=i+1;
   tic   
   A = rand(1,5)
   disp(A);
   File_id = fopen(['delay_' str(i) '.dat'], 'w');
   fwrite(File_id, A, 'double'); 
   fclose(File_id);

   File_id = fopen('test.dat', 'r');
   A = fread(File_id,'double=>int8'); 
   fclose(File_id);
   disp(A);
   T=toc;
   pause(300-T)
end