Python Examples for Beginners: Python Code to Find Sum of Natural Numbers Using Recursion

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Python Code to Find Sum of Natural Numbers Using Recursion

In this program, you’ll learn to find the sum of natural numbers using recursive function.


In the program below, we’ve used a recursive function recur_sum() to compute the sum up to the given number.

Source Code

# Python program to find the sum of natural using recursive function

def recur_sum(n):
   if n <= 1:
       return n
   else:
       return n + recur_sum(n-1)

# change this value for a different result
num = 16

if num < 0:
   print("Enter a positive number")
else:
   print("The sum is",recur_sum(num))

Output

The sum is 136

Note: To test the program for another number, change the value of num.

 

Python Examples for Beginners: Python Code to Find the Sum of Natural Numbers

 

Python Examples for Beginners: Python Code to Find Sum of Natural Numbers Using Recursion

 

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