No designer - circumference

[meriah]

Parameter circumference: centre coordinates, radius. Methods: Procedure for initialization of fields, procedure for displaying the object ' s field values and function for determining whether a point is located at coordinates x,y inside the circumference. Created as he could, when compiling makes error: ‘x’ was not declared in this scope

#include <iostream>
#include <cmath>
using namespace std;
class Circle
{
private:
   double x;
   double y;
   double r;
public:
Circle();
   Circle(double x=2, double y=2, double r=5);
};
int Main(){

if (xx+yy<=r*r)

{

cout << "Точка принадлежит окружности." << endl;

}

else

{

cout << "Точка не принадлежит окружности." << endl;

}

return 0;

}

[irl]

Your function. int Main() is not a class method (based outside) and therefore knows nothing about variables x, y, rbut you use them in this function.

class Circle
{
private:
    double x;
    double y;
    double r;
public:
    Circle();
    Circle(const double x0=2, const double y0=2, const double r0=5);
int Main();   

};
int Circle::Main(){

if (xx+yy<=r*r)

{

cout << "Точка принадлежит окружности." << endl;

}

else

{

cout << "Точка не принадлежит окружности." << endl;

}

return 0;

}

I really suspect it. Main()which main() usually :

P. S.

class Circle

{

private:

double x;

double y;

double r;

public:

Circle();

Circle(const double x0=2, const double y0=2, const double r0=5);

void show();   

};
Circle::Circle()

: x(0), y(0), r(0)

{}
Circle::Circle(const double x0, const double y0, const double r0)

: x(x0), y(y0), r(r0)

{}
int Circle::show(){

if (xx+yy<=r*r)

{

cout << "Точка принадлежит окружности." << endl;

}

else

{

cout << "Точка не принадлежит окружности." << endl;

}

return 0;

}

and use in the main code, for example:

Circle obj(10, 20, 5);

obj.show();