Java Quiz Code

import java.util.Scanner;
public class Quiz
{
    public static void main(String []args)
    {
int c = 0;
        Scanner scan = new Scanner ( System.in );

        System.out.println("What's 2 + 2");
        System.out.println("4");
        System.out.println("2");
        System.out.println("1");
        System.out.println("3\n");

        String in;
        in = scan.nextLine();


        if(in.equals("4"))
        {
            System.out.println("Correct\n");
            c++;
        }

        else
        {
            System.out.println("Wrong\n");
        }

        System.out.println("What Language Is This Coded In?\n");

        System.out.println("C");
        System.out.println("C++");
        System.out.println("Java");
        System.out.println("PC");

        in=scan.nextLine();

        if(in.equalsIgnoreCase("Java"))
                {
                    System.out.println("Correct");
                    c++;
                }

                else
                {
                    System.out.println("Wrong");
                }

                System.out.println(c + " Correct out of 2");

                System.out.println(100 * c/2 + "%");

    }
}