【程序29】

  题目：给一个不多于5位的正整数c语言程序设计实例，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：(这里是一种简单的算法c语言程序设计实例，师专数002班赵鑫提供)

  2.程序源代码：

  main( )

  {

  long a,b,c,d,e,x;

  scanf("%ld",&x);

  a=x/10000;/分解出万位/

  b=x000/1000;/分解出千位/

  c=x00/100;/分解出百位/

  d=x0/10;/分解出十位/

  e=x;/分解出个位/

  if (a!=0) [printf]3;

  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);

  }