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()
#include <iostream>using namespace std;class 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)
{this->width=w;this->height=h;
}void Rect::set_w(int w)
{cout << "请输入修改的宽度: " << endl;cin >> w ;cout << w << endl;
}void Rect::set_h(int h)
{cout << "请输入修改的高度: " << endl;cin >> h ;cout << h << endl;
}void Rect::show()
{cout << width << " " << height << endl;cout << 2*(width+height) << endl;cout << width*height << endl;
}int main()
{Rect r;r.init(6,8);r.show();return 0;
}