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、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。

2、程序分析：

    学会分解出每一位数

3、程序源码：

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);
}