The floor function maps a real number to the nearest integer in the downward direction. The ceiling function rounds a real number to the nearest integer in the upward direction.

The notation for floor is floor(x) = ⌊x⌋
 

For example, ⌊4.32⌋=4 and ⌊4⌋=4. The floor function also rounds negative numbers to the nearest integer in the downward direction: ⌊−4.32⌋=−5 and ⌊−4⌋=−4.

The notation for ceiling is ceiling(x) = ⌈ x⌉

For example, 

⌈4.32⌉=5 and ⌈4⌉=4. The ceiling function also rounds negative numbers to the nearest integer in the upward direction: ⌈−4.32⌉=−4 and ⌈−4⌉=−4.

 

EXAMPLE INPUT (the program should prompt the user to input the below values - these are example values only):

Enter four real numbers, separated by a space: 1.1 3.6 6.7 2.1

 

CORRESPONDING OUTPUT:

The Floor of each is:  1.0 3.0 6.0 2.0
The Ceiling of each is:  2.0 4.0 7.0 3.0
 

CODE TO ADD ONTO:

 

import java.util.Scanner;
import java.util.*;
import java.lang.Math;

public class Lab4 {
  public static void main(String args[]) {
 
// declare variables for user input:  
   double userInput;

   
// Prompt to enter 4 doubles:
  Scanner scnr = new Scanner(System.in);
  System.out.print("Enter four real numbers, separated by a space: ");
     double[] numbers = new double[4];   // List of doubles specified by the user

// 'For' loop to get user's doubles:
{
 YOUR CODE HERE
     }
     
// print floor and ceiling of each input (use a 'for' loop for each):
// Floor syntax: System.out.print(Math.floor(numbers[i]));
// Ceiling syntax: System.out.print(Math.ceil(numbers[i]));

 YOUR CODE HERE

 }
}