Question

Write a program that receives a series of numbers from the user and allows the user to press the enter key to indicate that he or she is finished providing inputs. After the user presses the enter key, the program should print: The sum of the numbers The average of the numbers

Answer 1

Answer:

The solution code is written in Python 3

1. count = 0
2. sum = 0
4. num = input("Enter a number: ")
6. while(num != ''):
7.    sum += float(num)
8.    count += 1
9.    num = input("Enter a number: ")
11. print("Sum : " + str(sum))
12. print("Average: " + str(sum / count))

Explanation:

Firstly, we declare two variables count and sum to hold the number of input number and the total of the input number, respectively (Line 1-2)

Next, we prompt user to input the first number (Line 4). While the num is not ' ' (This means it is not "Enter" key), accumulate the num to sum variable and increment count by one (Line 6-8) and then prompt the user to input the next number (Line 9).

At the end, display the sum and average using print function (Line 11 -12).