**Working variables**

*(Display Listing 7.)*

The program declares and initializes the following working variables that are used in the algorithm:

**grade**- Used to capture input grade value from user. Initial value is immaterial.**sum**- Used to compute the sum of all the grade values. Initial value of zero is critical to the success of the program.**count**- Used to keep track of the number of grades entered. Initial value of zero is critical to the success of the program.**avg**- Used to store the average computed as the sum divided by the count. Initial value is immaterial.