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#include <cmath>  
 #include <iostream>
using namespace std;
class Point{
	private://Данные -члены(закрытые)
	int x,y;
	public: //функции -члены
	void set(int new_x,int new_y);
	int get_x();
	int get_y();
	double Point operator%(pt);
};
double Point::operator%(Point pt){
		int d1=pt.x-x;
		int d2=pt.y-y;
		return sqrt((double)(d1*d1+d2*d2));}
int main(){
	Point pt1,pt2;
	pt1.set(10,20);
	cout<<"pt1 is"<<pt1.get_x();
	cout<<","<<pt1.get_y()<<endl;
	pt2.set(-5,-25);
	cout<<"pt2 is"<<pt2.get_x();
	cout<<","<<pt2.get_y()<<endl;
	Point pt1(20,20);
	Point pt2(24,23);
	cout<<"расстояние "<<pt1%pt2;
	return 0;
}
void Point::set(int new_x,int new_y){
	if (new_x<0)
	new_x*=-1;
	if(new_y<0)
	new_y*=-1;
	x=new_x;
	y=new_y;
}
int Point::get_x(){
	return x;
}
int Point::get_y(){
	return y;
}
 

prog.cpp:11:9: error: expected ‘;’ at end of member declaration
  double Point operator%(pt);
         ^
prog.cpp:11:25: error: ‘pt’ has not been declared
  double Point operator%(pt);
                         ^
prog.cpp:11:27: error: ISO C++ forbids declaration of ‘operator%’ with no type [-fpermissive]
  double Point operator%(pt);
                           ^
prog.cpp:13:25: error: declaration of ‘operator%’ as non-function
 double Point::operator%(Point pt){
                         ^
prog.cpp:13:31: error: expected primary-expression before ‘pt’
 double Point::operator%(Point pt){
                               ^
prog.cpp: In function ‘int main()’:
prog.cpp:25:11: error: redeclaration of ‘Point pt1’
  Point pt1(20,20);
           ^
prog.cpp:18:8: error: ‘Point pt1’ previously declared here
  Point pt1,pt2;
        ^
prog.cpp:26:11: error: redeclaration of ‘Point pt2’
  Point pt2(24,23);
           ^
prog.cpp:18:12: error: ‘Point pt2’ previously declared here
  Point pt1,pt2;
            ^
prog.cpp:27:36: error: no match for ‘operator%’ (operand types are ‘Point’ and ‘Point’)
  cout<<"расстояние "<<pt1%pt2;
                                    ^
prog.cpp:27:36: note: candidate is:
prog.cpp:11:15: note: int Point::operator%(int)
  double Point operator%(pt);
               ^
prog.cpp:11:15: note:   no known conversion for argument 1 from ‘Point’ to ‘int’

Standard output is empty