Please help with number 20

EteVerity that the program worked correctly by opening the Modity This18.txt file in a text editor. Close the ModifyThis18.txt file. 19. If necessary, create a new project named Introductory19 Project and save it in the Cpp8lChapl4 folder. Also create a new source file named Introductory19.cpp. Create a program that saves a company's payroll amounts in a sequential access file. Save the amounts in fixed-point notation with two decimal places. Name the sequential access file Introductory19.txt and open the file for append. Use a negative number as the sentinel value. Save and then run the program. Enter the following payroll amounts and sentinel value: 45678.99, 67000.56, and-1. Now, run the program again. This time, enter the following payroll amounts and sentinel value: 25000.89, 35600.55, and-1. Open the Introductory19.txt file in a text editor. The file should contain four payroll amounts, with each amount appearing on a separate line in the file. Close the Introductory19.txt file. If necessary, create a new project named Introductory20 Project and save it in the program that saves prices in a sequential access file. Save the prices in fixed-point notation file for append. Use a negative number as the sentinel value. Save and then run the program. 20. Cpp8 Chap14 folder Also create a new source file named Introductory20.cpp. Create a with two decimal places. Name the sequential access file Introductory20.txt and open the 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. If necessary, create a new project named Introductory21 Project and save it in the Cpp8|Chap14 folder. Also create a new source file named Introductory21.cpp. If 1