Constructor overloading

I need to use function overloading to :

Accept all co-ordinates as arguments and set data members to match.

I don't know how to accept the co-ordinates as arguments and how to set the data members to match. Any advice would be good thanks

I have 3 classes , class 1Dpoint class2dpoint and class3dpoint. 1dcontains data member x, 2d contains x and y and 3d contains x,y and z. I have to use multiple constructors as means of function overloading. currently i have constructors : point1d, point2d and point3d. I have already started function overloading, and i have accepted no parameters and set co-ordinates to 0 ( well i think what i have done is correct). And my next step is the one above.

Code:

class 1DPoint    // The base Class
{
public:
 1DPoint() // No parameters
 1DPoint(int x) // One parameter

    int x = 0;

    ~point1DClass();    //Destructor function
};

class 2DPoint: public 1DPoint
{
public:
2DPoint() // No Parameter
2DPoint(int x, int y) // Two Parameters

    int y = 0;

    ~point2DClass();    //Destructor function

};

class 3DPoint : public 2DPoint
{
public:
3Dpoint()// No Parameter
3DPoint(int x, int y, int z) // Three Parameters


  int z = 0;

 ~point3DClass();    //Destructor function
};
{
    
}
point3DClass::point3DClass(int x, int y, int z)
   x = 0;
   y = 0;
   z = 0;


};

int main ()
{

1DPoint(4);
2DPoint(6,3);
3DPoint(2,1,7);

}
return 0;