If necessary, create a new project named Introductory20 Project and save it in the Cpp8\Chap14 folder. Also create a new source file named Introductory20.cpp. Create a program that saves prices in a sequential access file. Save the prices in fixed-point notation with two decimal places. Name the sequential access file Introductory20.txt and open the file for append. Use a negative number as the sentinel value. Save and then run the program. Enter the following prices and sentinel value: 10.50, 15.99, and -1. Now, run the program again. This time, enter the following prices and sentinel value: 20, 76.54, 17.34, and -1. Open the Introductory20.txt file in a text editor. The file should contain five prices, with each price appearing on a separate line in the file. Close the Introductory20.txt file.

Notice:

• The Sequential Access File is named "Introductory20.txt"
• The File is opened in append mode.
• You use negative numbers as the sentinel value.

(Note:Allnegative numbers can be sentinel values not just -1)

• Output is formatted with:

New lines between each number

Numbers are formatted in fixed-point notation with 2 decimal places