第七周作业

package task1;
public class q {
    int length;
    int width;

    public void showAll() {
        System.out.println("矩形长为:" + length + "矩形宽为:" + width);
    }

    public void getArea() {
        System.out.println("矩形面积为:" + length * width);
    }

    public void getPer() {
        System.out.println("矩形周长为:" + (length + width) * 2);
    }
}