Question

Python 3.7.4 (Introductory Level)

You want to know your grade in Computer Science:

Write a program that continuously takes grades between 0 and 100 to standard input until you input "stop", at which point it should print your average to standard output.

Answer 1

Python 3.7.+ standard program to implement the given problem is provided below:

Note: The code indentation may lost while copying, if happens so please refer the screenshot provided to reconstruct the indentation.

Python code:

#the variable to store count

scoresCount = 0

#the variable to store scores sum

scoreSum = 0

#the variable to store the input

inp = ''

#user prompt

print("Please inp the grades one by one, inp 'stop' to quit")

#repeat while input is not stop

while inp != "stop":

    inp = input('Enter the grade:' )

            #if input is not stop and is a number

    if inp != "stop" and inp.isdigit():

                       

                        #add the input grade to the sum

        scoreSum += int(inp)

                       

                        #increment the scores count

        scoresCount = scoresCount +1

#print the average to standard output

print("The average of entered grades is: ")

print (float(scoreSum) / scoresCount)

Output:

Code screenshot: