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Question

当我设置&color不起作用时，没有&说需要转换并且不编译

我想在控制台中显示颜色属性

using namespace std;
int main()
{
    class Car {
    private:
        int speed;
        string color;

    public:
        Car::Car(int Speed, string Color)
        {
            speed = Speed;
            color = Color;
        }
        void Car::MyMethod()
        {
            cout << color << endl;
        }
    };

    Car Ferrari = Car(200, “Blue”);

    Ferrari.MyMethod();

    return 0;
}

Answer 1

添加正确的包含后，删除类内的范围解析（ :: ）并修复代码编译的引号

#include <iostream>
#include <string>

using namespace std;
int main()
{
    class Car {
    private:
        int speed;
        string color;

    public:
        Car(int Speed, string Color)
        {
            speed = Speed;
            color = Color;
        }
        void MyMethod()
        {
            cout << color << endl;
        }
    };

    Car Ferrari = Car(200, "Blue");

    Ferrari.MyMethod();

    return 0;
}