C++QT-day2

#include <bits/stdc++.h>/*自己封装一个矩形类(Rect)，拥有私有属性:宽度(width)、高度(height)，定义公有成员函数:初始化函数:void init(int w, int h)更改宽度的函数:set_w(int w)更改高度的函数:set_h(int h)输出该矩形的周长和面积函数:void show()*/using namespace std;struct Rect
{
private:int width;int height;
public:void init(int w, int h);void set_w(int w);void set_h(int h);void show();
};void Rect::init (int w, int h)
{width = w;height = h;
}void Rect::set_w(int w)
{width = w;
}void Rect::set_h(int h)
{height = h;
}void Rect::show()
{cout << "矩形的周长为：" << (width+ height)*2 << endl;cout << "矩形的面积为：" << width * height;
}int main()
{int w, h;cout << "输入宽度>>>";cin >> w;cout << "输入高度>>>";cin >> h;Rect r;r.set_w(w);r.set_h(h);r.show();return 0;
}