#include<stdio.h>
int main()
{
int a,b,hcf=1,lcm,i,min;
printf("enter the 1st and 2nd num");
scanf("%d %d",&a,&b);
if(a<b)
min=a;
else
min=b;
for(i=1;i<=min;i++)
{
if(a%i==0 && b%i==0)
hcf=i;
}
lcm=a*b/hcf;
printf("HCF =%d\n",hcf);
printf("lcm =%d",lcm);
return 0;
}
you did mistake in lcm = a8b/hcf
it should be lcm=a*b/hcf;