Question

Intro to Python Programming Campus GPA Design an app (that you could possibly deploy to a smartphone) that would allow you to estimate the campus-wide average GPA. For example, you could use this app to stand out by the fountain and ask people for their GPAs. When you are finished gathering input, your program will then display the overall average GPA and the number of students surveyed. Implement the app using a "loop and a half." Choose a good sentinel value. Remember to avoid processing the sentinel value.

Answer 1

gpa_avg.py

# n for storing number of students
n = 0
# for storing total gpa
total_gpa = 0

# using loop to get student gpa
while 1:
    # used any negative gpa to terminate loop as gpa can not be negative
    input_gpa = float(input("Enter GPA or any negative number to terminate: "))
    # checking for sentinel value
    if input_gpa < 0:
        break
    # adding to total gpa
    total_gpa += input_gpa
    # adding to count
    n += 1

# printing the info
print("\nOverall Average GPA: {:.2f}".format(total_gpa / n))
print("number of students surveyed:", n)

# OUT

Enter GPA or any negative number to terminate: 4 Enter GPA or any negative number to terminate: 7 Enter GPA or any negative number to terminate: 1 Enter GPA or any negative number to terminate:8 Enter GPA or any negative number to terminate: 9 Enter GPA or any negative number to terminate: 6 Enter GPA or any negative number to terminate: 8 Enter GPA or any negative number to terminate: 9 Enter GPA or any negative mber to terminate: -1

Please do let me know if u have any concern....