C++ 当重载大于运算符以比较来自不同类的两个双精度值时，我得到一个操作数错误

我正在做家庭作业，以便：

使用一个重载的圆添加两个圆的区域+

使用重载函数添加两个矩形的区域+

比较圆和矩形的面积，看看它们是否相同==

使用overloaded>

到目前为止，我已经完成了前三项。我已经为大于函数重载编写了代码，但我一直收到一个错误，指出“没有运算符”>“匹配这些操作数”

我尝试将操作符函数更改为类矩形和类圆形的成员函数。我甚至尝试过将>操作符更改为其他操作符，但仍然有相同的错误

ShapeType.h选择-

    friend bool operator==(const circleType&,
    const rectangleType&);
//Overload the operator ==

    friend bool operator>(const circleType&,
    const rectangleType&);
//Overload the operator >

    bool operator== (const circleType& Circle,
    const rectangleType& rectangle)
    {
          return Circle.area() == rectangle.area();
    }

    bool operator> (const circleType& Circle,
    const rectangleType& rectangle)
    {
          return (Circle.area() > rectangle.area());
    }

                case 3:
            cout << "Enter the radius of the circle: ";
            cin >> radius;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> radius;
            }

            cout << "Enter the height of the rectangle: ";
            cin >> height;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100,'\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> height;
            }

            cout << "Enter the width of the rectangle: ";
            cin >> width;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100,'\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> width;
            }

            circle.setRadius(radius);
            rectangle.setDimensions(height, width);
            cout << "The area of the circle is: " << circle.area() << endl;
            cout << "The area of the rectangle is: " << rectangle.area() << endl;
            if (circle == rectangle)
            {
                cout << "The area of the circle is equal to the area of the rectangle.";
            }
            else
                cout << "The area of the circle is not equal to the area of the rectangle.";

            cout << endl << endl;
            break;

        case 4:
            cout << "Enter the radius of the circle: ";
            cin >> radius;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> radius;
            }

            cout << "Enter the height of the rectangle: ";
            cin >> height;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> height;
            }

            cout << "Enter the width of the rectangle: ";
            cin >> width;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> width;
            }

            circle.setRadius(radius);
            rectangle.setDimensions(height, width);
            cout << "The area of the circle is: " << circle.area() << endl;
            cout << "The area of the rectangle is: " << rectangle.area() << endl;
            if (circle > rectangle)
            {
                cout << "The area of the circle is greater than the area of the rectangle.";
            }
            else
                cout << "The area of the rectangle is greater than the circle.";

            cout << endl << endl;
            break;

ShapesTypeImp.cpp选择-

    friend bool operator==(const circleType&,
    const rectangleType&);
//Overload the operator ==

    friend bool operator>(const circleType&,
    const rectangleType&);
//Overload the operator >

    bool operator== (const circleType& Circle,
    const rectangleType& rectangle)
    {
          return Circle.area() == rectangle.area();
    }

    bool operator> (const circleType& Circle,
    const rectangleType& rectangle)
    {
          return (Circle.area() > rectangle.area());
    }

                case 3:
            cout << "Enter the radius of the circle: ";
            cin >> radius;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> radius;
            }

            cout << "Enter the height of the rectangle: ";
            cin >> height;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100,'\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> height;
            }

            cout << "Enter the width of the rectangle: ";
            cin >> width;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100,'\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> width;
            }

            circle.setRadius(radius);
            rectangle.setDimensions(height, width);
            cout << "The area of the circle is: " << circle.area() << endl;
            cout << "The area of the rectangle is: " << rectangle.area() << endl;
            if (circle == rectangle)
            {
                cout << "The area of the circle is equal to the area of the rectangle.";
            }
            else
                cout << "The area of the circle is not equal to the area of the rectangle.";

            cout << endl << endl;
            break;

        case 4:
            cout << "Enter the radius of the circle: ";
            cin >> radius;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> radius;
            }

            cout << "Enter the height of the rectangle: ";
            cin >> height;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> height;
            }

            cout << "Enter the width of the rectangle: ";
            cin >> width;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> width;
            }

            circle.setRadius(radius);
            rectangle.setDimensions(height, width);
            cout << "The area of the circle is: " << circle.area() << endl;
            cout << "The area of the rectangle is: " << rectangle.area() << endl;
            if (circle > rectangle)
            {
                cout << "The area of the circle is greater than the area of the rectangle.";
            }
            else
                cout << "The area of the rectangle is greater than the circle.";

            cout << endl << endl;
            break;

Main.cpp选择-

    friend bool operator==(const circleType&,
    const rectangleType&);
//Overload the operator ==

    friend bool operator>(const circleType&,
    const rectangleType&);
//Overload the operator >

    bool operator== (const circleType& Circle,
    const rectangleType& rectangle)
    {
          return Circle.area() == rectangle.area();
    }

    bool operator> (const circleType& Circle,
    const rectangleType& rectangle)
    {
          return (Circle.area() > rectangle.area());
    }

                case 3:
            cout << "Enter the radius of the circle: ";
            cin >> radius;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> radius;
            }

            cout << "Enter the height of the rectangle: ";
            cin >> height;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100,'\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> height;
            }

            cout << "Enter the width of the rectangle: ";
            cin >> width;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100,'\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> width;
            }

            circle.setRadius(radius);
            rectangle.setDimensions(height, width);
            cout << "The area of the circle is: " << circle.area() << endl;
            cout << "The area of the rectangle is: " << rectangle.area() << endl;
            if (circle == rectangle)
            {
                cout << "The area of the circle is equal to the area of the rectangle.";
            }
            else
                cout << "The area of the circle is not equal to the area of the rectangle.";

            cout << endl << endl;
            break;

        case 4:
            cout << "Enter the radius of the circle: ";
            cin >> radius;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> radius;
            }

            cout << "Enter the height of the rectangle: ";
            cin >> height;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> height;
            }

            cout << "Enter the width of the rectangle: ";
            cin >> width;

            while (cin.fail())
            {
                cin.clear();
                cin.ignore(100, '\n');
                cout << endl << "Not a valid input, enter a number: ";
                cin >> width;
            }

            circle.setRadius(radius);
            rectangle.setDimensions(height, width);
            cout << "The area of the circle is: " << circle.area() << endl;
            cout << "The area of the rectangle is: " << rectangle.area() << endl;
            if (circle > rectangle)
            {
                cout << "The area of the circle is greater than the area of the rectangle.";
            }
            else
                cout << "The area of the rectangle is greater than the circle.";

            cout << endl << endl;
            break;

案例3：
cout>半径；
while（cin.fail（））
{
cin.clear（）；
cin.忽略（100，“\n”）；
库特半径；
}
cout>高度；
while（cin.fail（））
{
cin.clear（）；
cin.忽略（100，“\n”）；
库特高度；
}
宽度；
while（cin.fail（））
{
cin.clear（）；
cin.忽略（100，“\n”）；
库特宽度；
}
圆。设定半径（半径）；
矩形。设置尺寸（高度、宽度）；
我试图找出错误，
然而，这个小小的例子正在发挥作用
cpp.sh/8excr

可能是您应该向区域函数添加常量限定符
我试图得到错误，
然而，这个小小的例子正在发挥作用
cpp.sh/8excr

可能您应该向面积函数添加常量限定符
运算符的重载（
运算符>（常量圆类型&，常量矩形类型&）
仅适用于形式为
某些圆>某些矩形
的表达式。要进行比较，必须有一个
运算符>（const RectangleType&，const CircleType&）
（注意参数顺序是交换的）。您的代码没有第二个运算符。同样的注释也适用于
操作符==（）
。重载
操作符>（const CircleType&，const RectangleType&）
仅适用于形式为
一些圆>一些矩形的表达式。要进行比较，必须有一个
运算符>（const RectangleType&，const CircleType&）
（注意参数顺序是交换的）。您的代码没有第二个运算符。同样的评论也适用于
操作符==（）
。感谢您的回复。我有两个类的面积函数的常量限定符。可能是别的吗？谢谢你的回复。我有两个类的面积函数的常量限定符。可能是别的原因吗？