Wieso operator + mit += implementieren??

[Gast]

Dope. Das könnte ich schon.

class Integer
{
public:
	Integer(int x)  :  value(x)		{}

	int value;
};

Integer operator+(const Integer& a, const Integer& b)
{
	return Integer(a.value + b.value);
}

int main()
{
	Integer a(2), b(3), c(8);

	a + b = c;
}

[interpreter]

Wieder was gelernt

[Erhard Henkes]

... und wieder: http://www.gotw.ca/gotw/004.htm (Herb Sutter)

... Note that this return type should be "const Complex" (not just "Complex") in order to prevent usage like "a+b=c".