Write a program in java to accept a range and print the Fibonacci series using impure function(non return type)

Fibonacci Series generates subsequent number by adding two previous numbers. Fibonacci series starts from two numbers − F0 and F1. The initial values of F0 and F1 can be taken 0, 1 or 1, 1 respectively.

Fn = Fn-1 + Fn-2

Algorithm

1. Take integer variable A, B, C
2. Set A = 1, B = 1
3. DISPLAY A, B
4. C = A + B
5. DISPLAY C
6. Set A = B, B = C
7. REPEAT from 4 - 6, for n times

Program:

import java.util.*;
class Fibonacci_Series_fun
{
  public void f1(int n)
  {
    int a=0,b=1,c,i;
    System.out.println("Fibonacci series is:");
    System.out.print(a+","+b+",");
    for(i=3;i<=n;i++)
    {
    c=a+b;
    System.out.print(c+",");
    a=b;
    b=c;
    }
  }
  public static void main(String args[])
  {
    int a;
    Scanner sc=new Scanner(System.in);
    System.out.println("Enter the number to print the fibonacci series :");
    a=sc.nextInt();
    Fibonacci_Series_fun obj=new Fibonacci_Series_fun();
    obj.f1(a);
  }
}

Output:

Enter the number to print the fibonacci series :
Fibonacci series is:
0,1,1,2,3,5,8,13,21,34,