Write a Program Decimal to Binary & count 1.

#include<stdio.h>
      int main()
      {
      int a, n, c[ 100 ], i, j,d ;
      while((scanf("%d",&n))==1)
      {
      for(i=0 ; n>0 ; i++)
      {
      c[i]=n%2;
      n=n / 2;
      }
      i=i-1;
      d=0;
      for(j=i ; j>=0 ; j--){
      printf ("%d",c [j]);
      if(c[j]==1)
      d++;
      }
      printf("\n%d\n",d);
      }
      return 0;
      }