How can I interface with octave with C++?

Hi,

I'm an student and I'm working with Octave. I've the same issue than 
this user:

https://www.daniweb.com/programming/software-development/threads/445631/how-can-i-interface-with-octave-with-c

I have a .mat file and I can work with it in Octave without any problem. 
I need load that file in a C++ program and
I wonder if is there any example code or something that could help me.

Thanks,
Miguel