Sum of n Digit numbers

#include"stdio.h"
#include"conio.h"
void main()
{
 int i,n,a,sum=0,x;

 printf("Enter n Digit Number: ");
 scanf("%d",&n);
    x=n;
 for(i=1;i<=n;i++)
 {
  a=n%10;
  n=n/10;
  sum=sum+a;
 }
 sum=sum+n;
 printf("\nSum of %d numbers=%d",x,sum);
 getch();

}