圆的面积

圆的面积

Time Limit: 1000 ms Memory Limit: 32768 KiB

Submit Statistic

Problem Description

    Give you the radius of a circle，caculate its area，PI=3.141592653。

Input

The first line of the input is a positive integer N,then follows N lines,each line is a real number represent the radius of the circle. 

Output

Output contains N lines,for each line of the input you should output one line, Case K: S,and K(count from 1)represents the number of the circle and S is the area.Keep two digits after the decimal point.

Sample Input

3
1
2
3

Sample Output

Case 1: 3.14Case 2: 12.57Case 3: 28.27

package test;

import java.util.Arrays; import java.util.Scanner;

import javax.swing.plaf.synth.SynthSpinnerUI;

public class Main {  public static void main(String[] args) {   // TODO Auto-generated method stub   Scanner sc = new Scanner(System.in);   int n, i;   n = sc.nextInt();   for(i = 0; i< n; i++)   {    Circle t = new Circle();    t.r =sc.nextInt();    System.out.printf("Case %d: %.2f\n", i+1, t.area(t.r));   }   sc.close();  }

} class Circle{  int r;  double PI=3.141592653;  public double area(int r)  {   return r*r*PI;  } }