C program to find lcm and gcd

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

int main()
{
    int n,m,a,b;

    int gcd,lcm;

    printf("\nEnter the two numbers:");

    printf("\n a: ");

    scanf("%d",&a);

    printf("\n b: ");

    scanf("%d",&b);

    m=a;

    n=b;

    while(m!=n)

    {
        if(m>n)

        {

            m=m-n;
        }

        else
       {
           n=n-m;

        }
    }

    gcd=m;

    lcm=(a*b)/gcd;


printf("lcm of %d and %d is = %d",a,b,lcm);

printf("\ngcd of %d and %d is = %d",a,b,gcd);
}