title: Writing multiple matrices to an ASCII file which can be read back into MATLAB
body: <p>I want to write multiple matrices from my C++ program to a single ASCII text file, which can be read into MATLAB by some inbuilt MATLAB function as separate matrices. Does such a function exist?   </p>
  
  <p>(The standard <code>dlmread</code> function just reads one matrix per text file)</p>