1 //程序员:马相露 2 public class World{ 3 public static void main(String[] args){ 4 double p=3.14,i=5.50; 5 6 System.out.println(" 圆的面积:"+ p*i*i+ "cm2"); 7 8 System.out.println(" 圆的周长:"+ 2*i*p +"cm"); 9 10 11 } 12 }