[C++] Calcolo della distanza tra due punti ed errore in compilazione

[Pacio88]

Ho da poco iniziato a studiare le classi ed ho provato a scrivere questo programmino che gestisce con la classe point dei punti caratterizzati dalle cordinate x, y ed un nome.
L'unico problema che riscontro è nella funzione distance dove vorrei calcolare la distanza tra due punti. Questo è un estratto del codice, dove per l'altro è riscontrato l'errore dal compilatore:

class point{
	int x,y;
	string name;
  public:	
	point();
	point(int, int);
	void initWithValue();
	void printPoint();
	double distance(point par);
};

point::point(){
	x=0;
	y=0;
	name="Untitled";
}	

point::point(int a, int b){
	x=a;
	y=b;
	name="Untitled";
}

void point::initWithValue(){
	int a, b;
	string n;
	
	cout << "Inserisci il nome del punto: ";
	getline(cin, n);
	cout << "Inserisci il valore delle ascisse: ";
	cin >> a;
	cout << "Inserisci il valore delle ordinate: ";
	cin >> b;
	x=a;
	y=b;
	name=n;
}

void point::printPoint(){
	cout << "Punto: " << name << endl
		 << "x: " << x << endl
		 << "y: " << y << endl;

}

double point::distance(point par){
	if(x.par==x){
		if(x.par>=x)
			return(x.par-x);
		else
			return(x-x.par);
		}
	if(y.par==y){
		if(y.par>=y){
		    return(y.par-y);
		}	
		else
			return(y-y.par);
		}
	else{
		return(sqrt((x.par+x)*(x.par+x)+(y.par+y)*(y.par+y)));
	}
}

L'errore è il seguente:

imac-di-Pacio:desktop pacio$ g++ program.cpp -o points
program.cpp: In member function ‘double point::distance(point)’:
program.cpp:56: error: request for member ‘par’ in ‘((point*)this)->point::x’, which is of non-class type ‘int’
program.cpp:57: error: request for member ‘par’ in ‘((point*)this)->point::x’, which is of non-class type ‘int’
program.cpp:59: error: request for member ‘par’ in ‘((point*)this)->point::x’, which is of non-class type ‘int’
program.cpp:61: error: request for member ‘par’ in ‘((point*)this)->point::y’, which is of non-class type ‘int’
program.cpp:62: error: request for member ‘par’ in ‘((point*)this)->point::y’, which is of non-class type ‘int’
program.cpp:63: error: request for member ‘par’ in ‘((point*)this)->point::y’, which is of non-class type ‘int’
program.cpp:66: error: request for member ‘par’ in ‘((point*)this)->point::y’, which is of non-class type ‘int’
program.cpp:69: error: request for member ‘par’ in ‘((point*)this)->point::x’, which is of non-class type ‘int’
program.cpp:69: error: request for member ‘par’ in ‘((point*)this)->point::x’, which is of non-class type ‘int’
program.cpp:69: error: request for member ‘par’ in ‘((point*)this)->point::y’, which is of non-class type ‘int’
program.cpp:69: error: request for member ‘par’ in ‘((point*)this)->point::y’, which is of non-class type ‘int’

Grazie in anticipo dell'aiuto.