package test1;
import ;
class circle{
double r,a,b,h;
public double zfx(double a) {
double circle=4a;
return circle;
}
public double cfx(double a,double b) {
double circle=(a+b)2;
return circle;
}
public double yuan(double r) {
double circle=r2;
return circle;
}
}
class area{
double r,a,b,h;
public double zfx(double a) {
double area=aa;
return area;
}
public double cfx(double a,double b) {
double area=ab;
return area;
}
public double yuan(double r) {
double area=(r, 2)*;
return area;
}
}
public class test3 {
public static void main(String[] args) {
// TODO Auto-generated method stub
("请选择要计算的图形:1.正方形 2.长方形 3.圆");
Scanner input=new Scanner();
int a=();
area re=new area();
circle ci=new circle();
switch(a) {
case 1:("请输入正方形的边长:");
double b=();
("面积是："+(b)+"周长是："+(b));
break;
case 2:("请输入长方形的长和宽:");
double c=();double d=();
("面积是："+(c,d)+"周长是："+(c,d));
break;
case 3:("请输入圆形的半径:");
double r=();
("面积是："+(r)+"周长是："+(r));
break;
default:("输入有误！");
}
}
}