Sum of digits of a number in c using recursion. Print the sum of digits of a number using recursion.

Sum of digits of a number in c using recursion Apr 22, 2022 · Given a number, we need to find the sum of digits in the number using recursion. Given a number n, find the sum of the first n natural numbers. Examples: Input: 12345 Output: 15 Explanation: Sum of digits → 1 + 2 + 3 + 4 + 5 = 15 Input: 45632 Output: 20 Approach: To understand the algorithm, consider the number 12345 and refer to the illustration below. In C#, recursion is a process in which a function calls itself directly or indirectly and the corresponding function is known as a recursive function. It covers basic concepts such as recursion, base cases, and user input, making it a useful example for beginners learning C programming. To Feb 14, 2024 · C program to calculate sum of digits of a number recursively Below program user a user defined function getSumOfDigit, that takes an integer as input parameter (num) and return the it’s sum of digits. The function returns an In function sum () check the value of ‘num’ variable is not equal to 0. Please refer Tail recursion for sum of array for details. I already discussed the iterative version of this program. Learn how to calculate the sum of digits of a number in C. Divide the value of ‘num’ variable by 10 integer value. Print the sum of digits of a number using recursion. Visit this page to find the sum of natural numbers using a loop. Next the function takes an integer as input, hence change the function declaration to sumOfDigits(int num);. In simple words, a function which calls itself is known as a Recursive Function. C++ Program to find Sum of Digits of a number using recursive function To achieve proper understanding, the first and foremost question that arises is What is a Recursive Function? When the function is called within the same function, it is known as recursion in C++. C Convert the File Contents in Upper-Case - C Program to read a text file and convert the file contents in capital (Upper-case) and write the contents in a output file. Jun 23, 2023 · Natural numbers include all positive integers from 1 to infinity. Program to copy contents of one file into another by changing Find the Common Ancestor and Print Path - C Create temporary node. Write a program to find sum of digits of a number using recursion in C, C++. The program below takes a positive integer from the user and calculates the sum up to the given number. Detailed programming tutorial with step-by-step instructions. It does not include zero (0). However, you will learn to solve this problem using recursion here Example: Calculate Sum of Natural numbers using Sep 30, 2024 · Sum of digits of a number in c program. Declare recursive function to find sum of digits of a number First give a meaningful name to the function, say sumOfDigits(). Create the binary search tree. Learn how to use recursion to calculate the sum of digits in a given number. Sep 2, 2024 · This C program demonstrates how to calculate the sum of the digits of a number using a recursive function. Jun 2, 2020 · In this tutorial you will learn how to write a program in C to sum the digits of a number using recursion. Explore different methods, including using loops, recursion, and character input, with detailed examples and code snippets. At each step, the function adds the current number n to the sum of all smaller numbers by calling recurSum (n-1). Jun 8, 2023 · Natural numbers include all positive integers from 1 to infinity. Sep 2, 2013 · Here's a solution to summing a series of integer digits that uses ternary operators with recursion and some parameter checking that only happens the first time through the function. This function implements the above mentioned recursive algorithm using division and modulus operator. In this program we take a number from user then add the digits of a number recursively and finally return the result. You can find the sum of natural numbers using loops as well. If the condition is true execute the statement. . There are multiple methods to find the sum of natural numbers and here, we will see how to find the sum of natural numbers using recursion. The positive numbers 1, 2, 3 are known as natural numbers. Mar 17, 2025 · Given a number, we need to find sum of its digits using recursion. Sep 10, 2025 · Auxiliary Space: O (N), due to recursive function calls stored in the call stack. The media could not be loaded, either because the server or network failed or because the format is not supported. Mar 8, 2016 · Required knowledge Basic C programming, If statement, Functions, Recursion Learn more – Progrma to find sum of digits using loop. Add the resulted value along with the modulus of the value of ‘num’ variable. The recursion continues until the base case is reached, where n = 0, at which point the function returns 0 to stop further calls. Nov 1, 2025 · C programming, exercises, solution : Write a program in C to find the sum of digits of a number using recursion. Recursion will terminate when num becomes Sep 27, 2025 · To find the sum of the first n natural numbers using recursion, we define a function recurSum (n-1). Basically our target is to add all digits of any given number. We can optimize the above recursive solution using tail recursion. This is a simple question to understand and implement recursion concept. In this article, you will learn how to make the sum of digits of a number in c by using various approaches like: for loop, while loop, do-while loop, function, and recursion. Extract the last digit: 12345 % 10 = 5, pass 1234 to the next step. oohkkb ntlga ajowte suu luuxn jcafn znfxyq vuyxaml ktkh diltbdq fnligd dkqpzxy mzggpl javg zzsxs