Algorithm

  1. Input: Take an input n from the user, representing the last natural number in the series.
  2. Initialize: Set a variable sum to 0 to store the cumulative sum.
  3. Loop: Use a loop to iterate from 1 to n.
    • In each iteration, add the current number to the sum.
    • Output: Display the final value of sum as the sum of natural numbers.

 

Code Examples

#1 Example- Python Program to Find the Sum of Natural Numbers

Code - Python Programming

#Taking user input
num = int(input('Enter a number:'))

if num < 0:
   num = input('Please enter a positive number:')
else:
   sum = 0
   #Loop to iterate till zero
   while(num > 0):
       sum += num
       num -= 1
   print("The sum of the natural numbers is:", sum)
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Output

x
–
+
cmd
Enter a number:15
The sum of the natural numbers is: 120
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Demonstration

Python Programing to Find the Sum of Natural Numbers-DevsEnv