**Answer:**

# define main to get an argument from the user, call the function, and display the final values

def main():

# ask an argument from the user.

number = int(input('Enter a positive integer: '))

# solve the integral thing of the number by putting the user's argument in the addition() function

finalSum = addition(number)

# display the final value integral thing

print("The integral of this number is ", finalSum, ".")

# define an addition function to find the integral

def addition(num):

# make an if-statement to test filter things out of your calculations. In this case, 1.

if num == 1:

#if 1, return 1. because 1 + (1 - 1) = 1

return 1

# this is where the recursion actually is. This is the part that calculates

else:

return num + addition(num-1)

# call your main function

main()

**Explanation:**

This is written in Python. A link to the output can be found below.

https://Sum-of-Numbers.hufflepuffler07.repl.run