Task-1: In Cartesian coordinate system, a linear equation represents a line passing through two discrete points, such as, (1, 1) and (4, 2), respectively. Hence, one can easily describe the “point” object with a C++ class as given below. class Point {
public:
Point(); //default constructor
Point(…); //parameterized constructor
Point(…); //copy constructor
~Point(); //destructor
… set_x(…); //some member functions
… set_y(…);
… get_x(…);
… get_y(…);
… print(); //prints the point object using some format, e. g., [1,2]
private:
int x, y; //data members
};
On the other hand, in order to create a “line” object, one can think of executing data composition technique where the line object is composed of two discrete point objects. Hence, one can write the following:
class Line {
public:
Line(); //default constructor
Line(…); //parameterized constructor
Line(…); //copy constructor
~Line(); //destructor
… set_point1(…); //some member functions
… set_point2(…);
… get_slope(); //calculates the slope value
… print(); //prints the line object using some format
//e. g., A line passing through [2,2] and [4,4] with slope = 1.0
private:
Point p1, p2; //data composition!
};
a. Write definitions of the member functions listed above.
b. Rewrite the program by separating the implementation file from the interface using a header file.
 Provide a driver program to test each implementation.

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