macOS in out?

 #include <iostream>
#include <string>
#include <fstream>
 
using namespace std;
 
class Shape
{
protected:
    int x, y;
public:
    Shape();
    Shape( Shape& ref );
    void SetOrigin( const int xx, const int yy );
    virtual void Display();
    virtual double Area();
    virtual void read ( ifstream& );
 
};
 
class Rectangle : public Shape
{
private:
    int length, width;
public:
    Rectangle();
    Rectangle( int l, int w );
    void Display();
    double Area();
};
 
class Triangle : public Shape
{
private:
    int base, height;
public:
    Triangle();
    Triangle( int b, int h );
    void Display();
    double Area();
};
 
class Circle : public Shape
{
private:
    int radius;
public:
    Circle();
    double Area();
    void Display();
    void read(ifstream&);
};
void  Circle::read ( ifstream& infile )
    {
        infile  >> x;
            infile >> y;
            infile >> radius;
        }
 
 
Triangle::Triangle()
{
    base = 0;
    height = 0;
}
 
Triangle::Triangle( int b, int h )
{
    base = b;
    height = h;
}
 
double Triangle::Area()
{
    return( 0.5 * base * height );
}
 
void Triangle::Display()
{
    cout << "The triangle is at ";
    cout << "( " << x << ", " << y << " )";
    cout << endl;    
}
 
void  Triangle::read ( ifstream& infile )
    {
        infile  >> x;
            infile >> y;
            infile >> base;
            infile >> height;
        }
 
Rectangle::Rectangle()
{
    length = 0;
    width = 0;
}
 
Rectangle::Rectangle( int l, int w )
{
    length = l;
    width = w;
}
 
double Rectangle::Area()
{
    return( length * width );
}
 
void Rectangle::Display()
{
    cout << "The rectangle is at ";
    cout << "( " << x << ", " << y << " )";
    cout << endl;    
}
 
void  Rectangle::read ( ifstream& infile )
    {
        infile  >> x;
            infile >> y;
            infile >> length;
            infile >> width;
        }
 
Circle::Circle()
{
    radius = 0;
}
 
double Circle::Area()
{
    return (3.14159*radius*radius);
}
 
void Circle::Display()
{
    cout << "The circle is at ";
    cout << "( " << x << ", " << y << " )";
    cout << endl;    
}
 
double Shape::Area()
{
    return 0;
}
 
Shape::Shape()
{
    x = 0;
    y = 0;
}
 
Shape::Shape( Shape& ref )
{
    x = ref.x;
    y = ref.y;
}
 
void Shape::SetOrigin( const int xx, const int yy )
{
    x = xx;
    y = yy;
}
 
void Shape::Display()
{
    cout << "The shape is located at ";
    cout << "( " << x << ", " << y << " )";
    cout << endl;
}
 
void Shape::read(ifstream&)
{
}
 
int main()
{
    int shapenum;
    string filename;
    Shape* p[1000]; 
    ifstream infile("infile.txt");
        char c;
 
 
 
 
 
 
 
 
 
 
 
    while ( infile)
    {
        switch (c) {
            case 'C':
    p[shapenum] = new Circle();
        break;
            case 'R':
    p[shapenum] = new Rectangle();
        break;
            case 'T':
    p[shapenum] = new Triangle();
        break;
        }
    }
p[shapenum] -> read (infile);
}