Operator Overloading

1. Modify CMatrix so that addition is implemented as operator+().
   • You may simply call the member function Add() which you have already defined.
   • Test your implementation with calculations like
     • a + b
     • a + b + c
     • a + a + a + a
2. Also, try to implement operator-() to handle a - b - c + d .
3. Hide the messages "Constructor called ..." and "Destructor called ...", because we don't need them now.
4. You may test your class with this main program.

   3   3   3   3
   3  12   3   3
   3   3 101   3
   6   6   6   6
   6  24   6   6
   6   6 202   6
  2  2  2  2
  2 20  2  2
  2  2  2  2
  4  4  4  4
  4 40  4  4
  4  4  4  4