C Program to Find the GCD and LCM of n Numbers

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>

int gcd(int x, int y) {
    int r = 0, a, b;
    a = (x > y) ? x : y; // a is greater number
    b = (x < y) ? x : y; // b is smaller number

    r = b;
    while (a % b != 0) {
        r = a % b;
        a = b;
        b = r;
    }
    return r;
}

int lcm(int x, int y) {
    int a;
    a = (x > y) ? x : y; // a is greater number
    while (1) {
        if (a % x == 0 && a % y == 0)
            return a;
        ++a;
    }
}

int main(int argc, char **argv) {
    printf("Enter the two numbers: ");
    int x, y;
    scanf("%d", &x);
    scanf("%d", &y);
    printf("The GCD of two numbers is: %d", gcd(x, y));
    printf("The LCM of two numbers is: %d", lcm(x, y));
    return 0;
}