java语言程序设计(基础篇)第十版编程练习题[2.2]

(计算圆柱体的体积)编写程序，读入圆柱体的半径和高，并使用下列公式计算圆柱的体积。

面积 = 半径 × 半径 × p
体积 = 面积 × 高

/*
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*/
package dome2_2;

import java.util.Scanner;

/**
*
* @author Administrator
*/
public class Dome2_2 {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
Scanner in = new Scanner(System.in);
double PI = 3.14;
System.out.print("Enter the radius and length of a cylinder:");
double radius = in.nextDouble();
double length = in.nextDouble();;
double area = radius * radius * PI;
double volume = area * length;
System.out.println("The area is " + area);
System.out.println("The volume is " + volume);

}

}