Enter the product number or 6 to quit ==>0
Enter quantity ==> 1
Error, invalid productEnter the product number or 6 to quit ==> 2
Enter quantity ==> 6
Enter the product number or 6 to quit ==> 2
Enter quantity ==> 7
Enter the product number or 6 to quit ==> 1
Enter quantity ==> 8
Enter the product number or 6 to quit ==> 6
Total is: 82.34