GCD and LCM of two Numbers.

#include<stdio.h>
int main()
{
    int num1,num2,n1,n2,rem,LCM,GCD;
    scanf("%d%d",&num1,&num2);

    n1 = num1;
    n2 = num2;

    while(n2!=0)
    {
        rem = n1%n2;
        n1 = n2;
        n2 = rem;
    }

    GCD = n1;
    LCM = num1*num2;

    printf("GCD = %d\n",GCD);
    printf("LCM = %d\n",LCM);

    return 0;

}