Harmonic Number in Java …ftc

Print the sum of nth harmonic number: 1/1 + 1/2 + … + 1/n.

Note: Use Double Data type and String.format(“%.02f”, variable name)

Input:
5    // nth number

Output:
2.28   // sum of nth harmonic number

import java.io.*;
import java.util.*;
public class temp{
  public static void main(String[] args){
    int n;
    Scanner scan = new Scanner(System.in);
    System.out.print("Enter nth number:  ");
    n = scan.nextInt();

    double s=0;
    for(int i=1;i<=n;i++)
    {
      s+=(float)1/i;
    }

    System.out.println("Sum = "+String.format("%.02f",s));
  }
}

INPUT_1:
Enter nth number:  5

OUTPUT:
Sum = 2.28

INPUT_2:
Enter nth number:  10

OUTPUT:
Sum = 2.93

INPUT_3:
Enter nth number:  20

OUTPUT:
Sum = 3.60

INPUT_4:
Enter nth number:  8

OUTPUT:
Sum = 2.72

INPUT_5:
Enter nth number:  56

OUTPUT:
Sum = 4.61

INPUT_6:
Enter nth number:  100

OUTPUT:
Sum = 5.19

ILLUSTRATION