Problem

In this exercise, you modify the program from Lab 7-2 in Chapter 7. If necessary, create...

In this exercise, you modify the program from Lab 7-2 in Chapter 7. If necessary, create a new project named Introductory18 Project and save it in the Cpp7\Chap09 folder. Copy the instructions from the Lab7-2.cpp file into a source file named Introductory18.cpp. (Alternatively, you can enter the instructions from Figure 7-52 into the Introductory18.cpp file.) Change the filename in the first comment. Modify the program so that it uses a value-returning function to determine the grade. Save and then run the program. Test the program appropriately.

REFERENCE: Figure 7-52