求多个数的最大公约数和最小公倍数

#include<bits/stdc++.h>
#include<iostream>
using namespace std;

int gcd(int a,int b)
{
int maxx,minn,r;
maxx=max(a,b);
minn=min(a,b);
r=maxx%minn;
while(r!=0)
{
maxx=minn;
minn=r;
r=maxx%minn;
}
return minn;
}

int lcm(int a,int b)
{
return a*b/gcd(a,b);
}
int main()
{
int a,b,c;
scanf("%d%d%d",&a,&b,&c);
printf("%d\n",gcd(gcd(a,b),c));
printf("%d\n",lcm(lcm(a,b),c));
return 0;
}