GCD and LCM of two Numbers

//C Program to Find GCD and LCM of two Numbers.
#include<stdio.h>
int main(){

int x1,x2,mod,num1,num2,gcd;
printf("Enter Two Number :");
scanf("%d%d",&x1,&x2);
num1=x1;
num2=x2;
while(num2!=0){
    mod = num1%num2;
    num1 = num2;
    num2 = mod;
}

printf("GCD of two number is :%d\n",num1);
printf("LCM of two number is :%d\n",((x1*x2)/num1));


return 0;
}