public class Loop
{
  public static void main( String [] args )
  {
	int i=0;

	while(i<5)
	{
		System.out.println(i*i);
		i++;
	}
  }
}

public class Loop
{
  public static void main( String [] args )
  {
	int i;

	for(i=0; i<5; i++)
	{
		System.out.println(i*i);
	}
   }
}

import java.util.Scanner;

public class Loop1
{
	public static void main(String [] args)
	{
		Scanner input = new Scanner(System.in);
		
		int num1, num2, sum;
		
		System.out.println("Enter two numbers:\n Enter 0, 0 to exit");
		num1 = input.nextInt();
		num2 = input.nextInt();
		
		while(num1!=0 && num2!=0)	
		{
			sum = num1+num2;
			System.out.printf("%d + %d = %d\n", num1, num2, sum);
			System.out.println("Enter two numbers:\n Enter 0, 0 to exit");
			num1 = input.nextInt();
			num2 = input.nextInt();	
		}
		
	}	
}