C++ algorithm to calculate least common multiple for multiple numbers

Question

Is there a C++ algorithm to calculate the least common multiple for multiple numbers, like lcm(3,6,12) or lcm(5,7,9,12)?

Answer 1

I found this while searching a similar problem and wanted to contribute what I came up with for two numbers.

#include 
#include 
using namespace std;

int main()
{
    cin >> x >> y;

    // zero is not a common multiple so error out
    if (x * y == 0)
        return -1;

    int n = min(x, y);
    while (max(x, y) % n)
        n--;

    cout << n << endl;
}