// Output file corresponding to "order.dat":
//
Customer Invoice:
SKU Units Unit Price Extended
--------------------------------------
4331 3 9.97 29.91
7335 1 2.23 2.23
7338 2 1.00 2.00
7339 10 0.75 7.50
7350 6 2.98 17.88
3110 1 19.99 19.99
4132 1 5.67 5.67
5001 1 7.95 7.95
1234 4 1.75 7.00
--------------------------------------
Total Price: 100.13
Sales Tax : 4.51
Grand Total: 104.64
-------------------------
Average cost per unit: 3.45