Question

class A

{

public:

//constructors //

other members private:

int a;

int b;

};

Give declatations of operator functions for each of the following ways to overload operator + You must state where the declatation goes, whether within the class in the public or private section or outside the class. The operator + may be overloaded. a) as friend function b) as member function c) as non-friend, non-member function

Answer 1

a) as friend function

class A
{
   private:
   int a;
   int b;
  
   public:
   A(int a,int b)
   {
       this->a = a;
       this->b = b;
   }
   friend A operator +(const A &obj1,const A &obj2); // declared friend as public method
  
};

b) as member function

class A
{
   private:
   int a;
   int b;
  
   public:
   A(int a,int b)
   {
       this->a = a;
       this->b = b;
   }
   A operator +(const A &obj); // public method inside the class
  
};

c) as non-friend, non-member function

class A
{
   private:
   int a;
   int b;
  
   public:
   A(int a,int b)
   {
       this->a = a;
       this->b = b;
   }

// net public get methods to access and b outside class
int getA(){

return a;

}

int getB(){

return b;

}
  
};

A operator +( A &obj1, A &obj2); // outside the class

Do ask if any doubt.