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package practice;

import java.util.Scanner;

public class FibonacciWhile {

public static void main(String[] args) {

System.out.println("Program to generate a fibonacci series using while loop.\n---");

Scanner ss = new Scanner(System.in);

System.out.print("Enter the number: ");

int num = ss.nextInt();

if (num>20 || num<=0) {

System.out.println("Out of limit");

end();

}

ss.close();

int lb = 0, ub = 1, temp = 0;

while (num>0) {

System.out.print(lb+" ");

temp = ub + lb;

lb = ub;

ub = temp;

num-=1;

}

end();

}

private static void end() {

System.out.println("\n---\nThe Program has ended.");

System.exit(0);

}