I can only hazard an answer: in the old days, the compilers would not check compatibility between pointer type and variable read at that memory location pointed to. That would allow nice tricks if you knew what you were doing and also nasty mistakes if you didn't. Newer compilers do not allow this anymore; i.e. when you decalre a pointer to point to say an integer variable, you cannot read from that location lets say a floatin point variable. Your error is of that kind; the problem usually arises when you use somebody elses code/libraries, as they may have been compiled in the old(er) days when the compiler would not do such checks...

@ lon Laurentiu Tobos

Thank you for your reply.

Yes that's right . As soon as I used the older version, the problem was solved.

Dear Azade Jamshidi ,

Unfortunately, there is no solution to tackle this problem. On the other hand, Matlab is not only an easy to learn, and high-level programming language but also contains a variation range of specific tool-boxes which convinces you to leave the C++ ;).