Question

Write a program using switch case to find the volume of a cube, a sphere and a cuboid. For an incorrect choice, an appropriate error message should be displayed. 

1. Volume of a cube = s * s * s
2. Volume of a sphere = `4/3` π*r*r*r (π = `22/7`)
3. Volume of a cuboid = l*b*h 

Answer 1

import java.util.*;
public class Q12{
public static void main(String args[]) {
Scanner in=new Scanner(System.in);
int n;
double s, r, l, b, h, v;
System.out.println("Enter 1 to find the volume of a cube");
System.out.println("Enter 2 to find the volume of a sphere");
System.out.println("Enter 3 to find the volume of a cuboid");
n = in.nextInt();
switch(n)
{
case 1: System.out.printn("Enter the value of s");
        s = in.nextDouble();
        v = s * s * s;
System.out.println("Volume of the cube is: " + v); break;

case 2: System.out.println("Enter the value of r");
        r = in.nextDouble();
        v = (4.0 / 3.0) * (22.0 / 7.0) * r * r * r ;
System.out.println("Volume of the sphere is: " + v); break;

case 3: System.out.printIn("Enter the values 1, b, h");
        l = in.nextDouble();
        b = in.nextDouble();
        h = in.nextDouble();
        v = l * b * h;
System.out.printin("Volume of the cuboid is: " + v); break;

default:System.out.printin("Invalid entry!!!"); break;
}
}}