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  1. /**
  2.  *
  3.  * @author Damien Bell <SkyeShatter@gmail.com>
  4.  */
  5. import java.lang.Math;
  6. import java.util.Scanner;
  7. class Jtutorial1 {
  8.     public static void main(String args[]){
  9.      Scanner input = new Scanner(System.in);
  10.         // Declare a double, run some tests on it.
  11.         // Is it even or odd?  Is it a perfect square?   Is it a whole number?
  12.         // Is the number squared even?  
  13.  
  14.  
  15.         double choice=0;
  16.  
  17.         System.out.println("Enter a value for the variable: ");
  18.         choice = input.nextDouble();
  19.  
  20.         //even
  21.         if((choice%2) < 1){
  22.             System.out.println("The number " + choice + " is even prior to the decimal point. ");
  23.         }
  24.         else{
  25.             System.out.println("The number " + choice + " is NOT even. ");
  26.         }
  27.  
  28.         //perfect square
  29.         if(((Math.sqrt(choice))%1) == 0){//sqrt(9) == 3
  30.             System.out.println("The number " + choice + "  is a perfect square: " + Math.sqrt(choice));
  31.         }
  32.         else{
  33.             System.out.println("The number " + choice + " is NOT a perfect square: " + Math.sqrt(choice));
  34.         }
  35.  
  36.         if ((choice%1) == 0){
  37.             System.out.println("The number " + choice + " is a whole number: ");
  38.         }
  39.         else {
  40.              System.out.println("The number " + choice + " is NOT a whole number: ");
  41.         }
  42.  
  43.         if((((Math.pow(choice, 2)))%2) == 0){
  44.             System.out.println("The number " + choice + " squared is even: "+ Math.pow(choice, 2));
  45.         }
  46.         else{
  47.              System.out.println("The number " + choice + " squared is NOT even: " + Math.pow(choice, 2));
  48.         }
  49.  
  50.     } //End main
  51. } //End class
  52.  
Success #stdin #stdout 0.07s 213440KB
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9
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Enter a value for the variable: 
The number 9.0 is NOT even. 
The number 9.0  is a perfect square: 3.0
The number 9.0 is a whole number: 
The number 9.0 squared is NOT even: 81.0
https://ideone.com/Fwjk2
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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