C语言：逆序输出

//题目：给一个不多于5位的正整数，要求：一、求它是几位数，二、逆序打印出各位数字。
//1. 程序分析：学会分解出每一位数，如下解释：
//2.程序源代码：
#include "stdio.h"
main( )
{
  long a,b,c,d,e,x;
  scanf("%ld",&x);
  a=x/10000;/*分解出万位*/
  b=x%10000/1000;/*分解出千位*/
  c=x%1000/100;/*分解出百位*/
  d=x%100/10;/*分解出十位*/
  e=x%10;/*分解出个位*/
  if (a!=0) printf("there are 5, %ld %ld %ld %ld %ld\n",e,d,c,b,a);
  else if (b!=0) printf("there are 4, %ld %ld %ld %ld\n",e,d,c,b);
    else if (c!=0) printf(" there are 3,%ld %ld %ld\n",e,d,c);
      else if (d!=0) printf("there are 2, %ld %ld\n",e,d);
        else if (e!=0) printf(" there are 1,%ld\n",e);
}