System.out.println("13.");
                System.out.println("Please type numbers bigger than 20, but not the number 999");
                c=in.nextInt();
                counter=0;
                while(c!=999){
                    if(c>20){
                        System.out.println("Success, " + c);
                        counter++;
                        System.out.println("Please type another number");
                        c=in.nextInt();
                    }
                    else{
                        System.out.println("You wrote " + counter + "numbers.");
                        c=999;
                    }