More work on loops

Create a class called Grades with a method called fixedAvg that will take in grades until -1 is pressed. It will then find the avg while dropping the lowest test score.

To be submitted - hwj7a - 4 point hw

Create a class called HWJ7a_Grades with a method called passingAvg that will find the average of all passing grades and keep track of the number of failing grades. Take in grades until the user types in a negative grade (any negative is the sentinel). It will then spit out the average of the passing grades and the number of failing grades. IE

The average of your passing grades is 84 and you have failed 2 classes.