[c ++]没有匹配的函数来调用，期望2个参数0提供

Question

这个编码一个矩形类，一个继承

有一些错误

----------------------------------------------- ------------------------------

#include <iostream>
#include <cmath>
using namespace std;
class Rectangle{ //class
private:
    double width;
    double height;
public:
    Rectangle(double width, double height);
    double area();
    double circumference();
    double getWidth();
    double getHeight();
};

class SquareRectangle:public Rectangle//inheritance{
private:
     double side;
public:
     SquareRectangle(double side);
     double getSide();
};

Rectangle::Rectangle(double width, double height){
    this->width = width;
    this->height = height;
}

double Rectangle::area(){
     return (getWidth()*getHeight());
}

double Rectangle::circumference(){
     return ((getWidth()*2)+(getHeight()*2));
}

double Rectangle::getWidth(){
     return width;
}

double Rectangle:: getHeight(){
    return height;
}
SquareRectangle::SquareRectangle(double side){
    this->side = side;
}

double SquareRectangle::getSide(){
    return side;
}

并且在此图片中可以看到此错误 Error

感谢这里的所有帮助

Answer 1

SquareRectangle 的构造函数需要调用其父类 Rectangle 的构造函数。构造函数可以这样编码：

SquareRectangle::SquareRectangle(double side)
: Rectangle(side, side) {
    this->side = side;
}