Write the Source code.

Write the definition of the default constructor of smart so that the instance variables of smart are initialized to 0.

Write the definition of the default constructor of superSmart so that the instance variables of superSmart are initialized to 0.

Write the definition of the member function set of smart so that the instance variables are initialized according to the parameters.

Write the definition of the member function sum of the class smart so that it returns the sum of the instance variables.

Write the definition of the member function manipulate of the class superSmart so that it returns the (x + y)z , that is, return x plus y to the power of z.

Consider the following class definitions: class smart class superSmart: public smart public: public: void print) const void set (int, int); int sum (); smart (); smart (int, int); void print() const; void set (int, int, int); int manipulate ); superSmart (); superSmart (int, int, int); private: private: int z; int x int y int secret()