The function takes an integer n and recursively calculates the sum of its digits. The base case is when n == 0, where the function simply returns 0. The recursive step extracts the last digit (n % 10) ...

Function gcd(int a, int b): This function takes two integers a and b and computes their GCD using recursion. The base case is when b is zero, at which point the GCD is a. Otherwise, the function calls ...

Abstract: In many universities across the world, C programming is taught to novice students in the first programming course. To assist their self-studies, we have developed C programming learning ...

A recursive scheme for determination of the sum-of-divisors function is presented. As all of the formulas involve triangular numbers, the scheme is therefore compared for efficiency with another known ...