Write a program for cube sum of first n natural number in python

By

Mastering Python: Program for Cube Sum of First n Natural Numbers

Introduction:
In the realm of programming, mastering Python opens up a world of possibilities. From simple scripts to complex algorithms, Python's simplicity and versatility make it a popular choice among developers. Today, we'll dive into a fundamental programming problem: finding the sum of cubes of the first n natural numbers using Python.

Problem Statement:
Given a positive integer n, our task is to write a Python program to calculate the sum of the cubes of the first n natural numbers.

Approach:
To tackle this problem, we'll employ a straightforward approach using a loop to iterate through the natural numbers from 1 to n, computing the cube of each number and summing them up. Let's break down the steps:

1. Take input for the value of n from the user.
2. Initialize a variable to store the sum of cubes.
3. Use a loop to iterate through the natural numbers from 1 to n.
4. Within the loop, calculate the cube of each number and add it to the sum.
5. Once the loop completes, print the sum of cubes.

Python Implementation:
Without further ado, let's translate our approach into Python code:

def cube_sum(n):
    sum_of_cubes = 0
    for i in range(1, n + 1):
        sum_of_cubes += i ** 3
    return sum_of_cubes

# Taking input from the user
n = int(input("Enter the value of n: "))

# Calling the function and printing the result
result = cube_sum(n)
print("The sum of cubes of the first", n, "natural numbers is:", result)

Explanation:
  • We define a function `cube_sum(n)` that takes an integer `n` as input.
  • Within the function, we initialize `sum_of_cubes` to 0, which will store the cumulative sum of the cubes.
  • Using a `for` loop, we iterate through the range from 1 to n (inclusive).
  • Inside the loop, we cube each number (`i ** 3`) and add it to `sum_of_cubes`.
  • After the loop completes, we return the final `sum_of_cubes`.
  • We take input for the value of n from the user and call the `cube_sum` function with this input.
  • Finally, we print the result.
Conclusion:
In this blog post, we've explored how to efficiently compute the sum of cubes of the first n natural numbers using Python. By breaking down the problem into simple steps and leveraging Python's intuitive syntax, we've crafted a concise and effective solution.

Comments

Post a Comment