Describe the output of the following program. What C++ object oriented features does this program use? What is the output of the program? You may write on the back of this page if necessary.

#include

class example

{

public:

int a;

int b;

example operator+(const example& obj);

void operator=(const example& obj);

};

void example::operator=(const example& obj)

{

(*this).a = obj.a;

(*this).b = obj.b;

return;

}

example example::operator+(const example& obj2)

{

example tmp_obj = *this;

tmp_obj.a = tmp_obj.a + obj2.a;

tmp_obj.b = tmp_obj.b + obj2.b;

return tmp_obj;

}

int main(void)

{

example obj1, obj2, obj3;

obj1.a = 1;

obj1.b = 1;

obj2.a = 2;

obj2.b = 2;

obj3.a = 0;

obj3.b = 0;

obj3 = obj1 + obj2;

std::cout<

return 0;