import java.util.Scanner;
public class calculator {
	public static void main(String args[]){
		Scanner scr = new Scanner(System.in);
		double fnum,snum,answer;
		int ch=0;
		System.out.print("Enter first number: ");
		fnum= scr.nextDouble();
		System.out.print("Enter second number: ");
		snum = scr.nextDouble();
		while(ch!=5){
		System.out.println("Choose choice:");
		System.out.println("1.Addition");
		System.out.println("2.Subtraction:");
		System.out.println("3.Multiplication:");
		System.out.println("4.Divison:");
		System.out.println("5.Exit");
		System.out.print("Enter choice: ");
		ch= scr.nextInt();
		switch(ch){
		case 1:
			answer= fnum+snum;
			System.out.println("The Addition is "+ answer);
			break;
		case 2:
			answer= fnum-snum;
			System.out.println("The Difference is "+ Math.abs(answer));
			break;
		case 3:
			answer= fnum*snum;
			System.out.println("The Multliplication is "+ answer);
			break;
		case 4:
			if(fnum==0||snum==0){
				System.out.println("Cant process this operation.");
				break;
			}
			int q,r;
			q=(int) (fnum/snum);
			System.out.println("The Qutoient is "+ q);
			r=(int) (fnum%snum);
			System.out.println("The Reminder is "+ r);
			break;
		case 5:
			System.out.println("Exited.");
				System.exit(0);
				break;
		default:
			System.out.println("Invalid Input");
			break;
		}
	}
}
}