Question

.创建一个Rectangle类，添加两个属性width和height。在Rectangle类中添加两个方法，计算矩形的周长和面积

Answer 1

/// c++
class Rectangle
{
int width, height;
public:
Rectangle()
: width(0), height(0)
{}

Rectangle(int w, int h)
: width(w), height(h)
{}

void setWidth(int w)
{ width = w; }
int getWidth()const
{ return width; }

void setHeight(int h)
{ height = h; }
int getHeight()const
{ return height; }

int perimeter()const
{ return (width+height)*2; }

int area()const
{ return width*height; }
};