#include
int main()
{
double width;
double height;
printf("请输入矩形的长：");
scanf("%lf%*c",&height);
printf("请输入矩形的宽：");
scanf("%lf%*c",&width);
printf("矩形周长：%lf\n",2 * (height + width));
printf("矩形面积：%lf\n",height * width);
return 0;
}