C++ language?

The second picture is for after you hit continue on the first menu

A menu should be provided as follows: Matrix Creator Menu 1. Generate Random M1 2. Generate Random M2 3. Load M1 from file 4. Load M2 from file 5. Enter M1 from keyboard 6. Enter M2 from keyboard 7. Display M1, M2, or M3 8. Continue 9. Exit (first prompt for the matrix dimensions) (only if M1 and M2 are not NULL)