What is the appropriate output for the following program? (C++) class point { pr

Question

What is the appropriate output for the following program? (C++)

class point {
private:
float x,y;

public:
point();
point(float,float);

float getx() { return x; };
float gety() { return y; };

point operator+(point p2);
};

point::point() {
x = 0;
y = 0;
}

point::point(float _x, float _y) {
x = _x;
y = _y;
}

point point::operator+(point p2) {
point temp(x - p2.x, y - p2.y);

return temp;
}

int main()
{
point a(3,4), b(2,2), c;

c = a + b;

cout << "c = (" << c.getx() << "," << c.gety() << ") ";

return 0;
}

A.) c = (5,6)

B.) c = (0,0)

C.) c = (6,8)

D.) c = (1,2)

Explanation / Answer

Answer is D)

C = (1,2)

Here there is point class where the variable are x and y

having methods:

// default constructor

point();

// parameterised constructor : assign values to x and y
point(float,float);

// return x

float getx() { return x; };

// return y
float gety() { return y; };

// operator overloading for +, where it calculate (x1 - x2),(y1 - y2)

point operator+(point p2);

The following opreation:

c = a + b;

temp(x - p2.x, y - p2.y)

x =3                                                                                                                     

p2.x =2                                                                                                                  

y =4                                                                                                                     

p2.y =2

=> temp(3 - 2, 4 - 2)

=> temp(1,2)

assign the temp variable to c

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