Calculator

import java.util.Scanner;
public class calc {
    public static void main(String args[])
    {
        Scanner sc = new Scanner(System.in);
        boolean flag = true;
        while(flag)
        {
            System.out.print("\nEnter 1st no : ");
            float a = sc.nextFloat();
            System.out.print("Enter 2nd no : ");
            float b = sc.nextFloat();
            System.out.print("Enter operator(+, -, *, /, %) : ");
            char op = sc.next().charAt(0);
            switch(op)
            {
                case '+' :
                System.out.println("\n" + a + " + " + b + " = " + (a+b) );
                break;
                case '-' :
                System.out.println("\n" + a + " - " + b + " = " + (a-b) );
                break;
                case '/' :
                System.out.println("\n" + a + " / " + b + " = " + (a/b) );
                break;
                case '*' :
                System.out.println("\n" + a + " * " + b + " = " + (a*b) );
                break;
                case '%' :
                System.out.println("\n" + a + " % " + b + " = " + (a%b) );
                break;

                default:
                System.out.println("Invalid operator!");
            }
            System.out.print("Continue(y/n) : ");
            char ans = sc.next().charAt(0);
            if(ans == 'n')
                flag = false;
        }

    }

}