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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		Scanner sc = new Scanner(System.in);
  13.  
  14.     System.out.println("Enter number: ");
  15.     int n = sc.nextInt();
  16.  
  17.     int l = String.valueOf(n).length();
  18.     int temp=n;
  19.  
  20.     int midVar=0, addVar=0, i=0;
  21.  
  22.     while (temp!=4)
  23.     {
  24.         midVar=0;
  25.  
  26.         for (i=l; i>0; i--)
  27.         {
  28.             addVar = temp/Math.pow(10, i);
  29.             midVar+=Math.sqrt(addVar);
  30.         }
  31.  
  32.         temp = midVar;
  33.  
  34.         if (temp==1)
  35.           break;
  36.     }
  37.  
  38.     if (temp==1)
  39.     {
  40.         System.out.println("Happy number");
  41.     }
  42.     else
  43.     {
  44.         System.out.println("Unhappy number");
  45.     }
  46. 	}
  47. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
68
compilation info 
Main.java:28: error: incompatible types: possible lossy conversion from double to int
            addVar = temp/Math.pow(10, i);
                         ^
1 error
stdout 
Standard output is empty
https://ideone.com/wu4wWi
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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