C program to find HCF and LCM using recursion
This tutorial on finding HCF and LCM of a whole number using C language was helpful to understand the basic techniques and mathematical operations in C language.
#include <stdio.h> long gcd(long, long); int main() { long x, y, hcf, lcm; printf("Enter two integers\n"); scanf("%ld%ld", &x, &y); hcf = gcd(x, y); lcm = (x*y)/hcf; printf("Greatest common divisor of %ld and %ld = %ld\n", x, y, hcf); printf("Least common multiple of %ld and %ld = %ld\n", x, y, lcm); return 0; } long gcd(long a, long b) { if (b == 0) { return a; } else { return gcd(b, a % b); } }