Java编程求体积表面积

Question

求正方体球体圆锥体圆柱体体积表面积
（下面12345是给分要求不是题目）

Answer 1

import java.util.Scanner;

public class Dome {
    public static void main(String[] args) {
        System.out.println("--------------计算神器--------- -----");
        System.out.println("|       1、求正方体体积 、表面积       |");
        System.out.println("|       2、求球体体积、表面积          |");
        System.out.println("|       3、求圆锥体体积 、表面积       |");
        System.out.println("|       4、求圆柱体体积 、表面积       |");
        System.out.println("|       5、退出程序                  |");
        System.out.println("------------------------------------");
        Scanner sc=new Scanner(System.in);


        for(;;){
            System.out.println("请输入你要求的形状对应的编号");
            int a=sc.nextInt();
            switch (a){
                case 1:
                    System.out.println("请输入边长：");
                    float l=sc.nextFloat();
                    System.out.println("边长为"+l+"的正方体体积为"+String.format("%.2f",squareV(l)));
                    System.out.println("边长为"+l+"的正方体表面积为"+String.format("%.2f",squareS(l)));
                    break;
                case 2:
                    System.out.println("请输入半径：");
                    float r=sc.nextFloat();
                    System.out.println("半径为"+r+"的球体体积为"+String.format("%.2f",ballV(r)));
                    System.out.println("半径为"+r+"的球体表面积为"+String.format("%.2f",ballS(r)));
                    break;
                case 3:
                    System.out.println("请输入半径和高：");
                    float r1=sc.nextFloat();
                    float h1=sc.nextFloat();
                    System.out.println("半径为+"+r1+",高为"+h1+"的圆锥体体积为："+String.format("%.2f",yuanzhuiV(r1,h1)));
                    System.out.println("半径为+"+r1+",高为"+h1+"的圆锥体表面积为："+String.format("%.2f",yuanzhuiS(r1,h1)));
                    break;
                case 4:
                    System.out.println("请输入半径和高：");
                    float r2=sc.nextFloat();
                    float h2=sc.nextFloat();
                    System.out.println("半径为+"+r2+",高为"+h2+"的圆柱体体积为："+String.format("%.2f",yuanzhutiV(r2,h2)));
                    System.out.println("半径为+"+r2+",高为"+h2+"的圆柱体表面积为："+String.format("%.2f",yuanzhutiS(r2,h2)));
                case 5:
                    a=0;
                    break;
            }
            if(a==0){
                System.out.println("欢迎再次使用！");
                break;
            }
        }
    }
    /**正方体体积*/
    public static float squareV(float l){
        return l*l*l;
    }
    /**正方体表面积*/
    public static float squareS(float l){
        return l*l*6;
    }
    /**球体体积*/
    public static double ballV(float r){
        return (4.0/3.0)*3.14*r*r*r;
    }
    /**球体表面积*/
    public static double ballS(float r){
        return 4.0*3.14*r*r;
    }
    /**圆锥体体积*/
    public static double yuanzhuiV(float r,float h){
        return (1.0/3.0)*3.14*r*r;
    }
    /**圆锥体表面积*/
    public static double yuanzhuiS(float r,float h){
        return 3.14*r+3.14*r*Math.sqrt(h*h+r*r);
    }
    /**圆柱体体积*/
    public static double yuanzhutiV(float r,float h){
        return h*3.14*r*r;
    }
    /**圆柱体表面积*/
    public static double yuanzhutiS(float r,float h){
        return 2+3.14*r*r+2*3.14*r*h;
    }

}