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c++ Help over-loading the operators for any circle class?
For that circle class below, wouldso would i,
1.Write the prototype to overload the operators +, <<, and == for the circle class Implement the
2.overloaded operator + and ==.
I've never really understood how to overload the operators and such. can someone please help? Thanks!
class Circle
Circle::Circle()
: rad( .00)
Circle::Circle(double radius)
: rad(radius)
Double Circle::getArea()
The category Circle models, clearly, a geometric circle.
Whenever we overload the + operator, it will likely be accustomed to "add" two circles such as this:
Circle c1(4) // Circle with radical = 4
Circle c2(3) // Circle with radical = 3
Circle c3 = c1 + c2 // ???
Exactly what does it mean to include two circles? That part's not specified.
With regard to this exercise, let us assume the sum of the two circles is really a circle whose radius is the sum radii of these two arguments. So,
Circle c3 = c1 + c2 // c3 is really a Circle with radical = 7
--
The insertion operator << must be declared as a friend, and it returns an ostream reference:
friend ostream& operator<<(ostream&, const Circle&)
The other two operators can be declared normally in the public section. As we discussed before, our version of the + operator will return a Circle. The == operator will return a bool indicating whether or not its operands have the same radius.
Circle operator+ (const Circle&)
bool operator== (const Circle&)
// Overload the + operator
Circle Circle::operator+ (const Circle& c) const
// Overload the << operator
ostream& operator<< (ostream& out, const Circle& c)
// Overload the == operator
bool Circle::operator== (const Circle& c)
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