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。
程序
#include <stdio.h>
int main(void)
{
int a,b,c,d,e,i;
long s;
printf("Please enter a number:");
scanf("%d",&s);
a=s/10000;
b=s/1000%10;
c=s/100%10;
d=s/10%10;
e=s%10;
if(a!=0)
printf("They are 5\n%d %d %d %d %d\n",e,d,c,b,a);
else if(b!=0)
printf("They are 4\n%d %d %d %d\n",e,d,c,b);
else if(c!=0)
printf("They are 3\n%d %d %d\n",e,d,c);
else if(d!=0)
printf("They are 2\n%d %d\n",e,d);
else if(e!=0)
printf("They are 1\n%d\n",e);
return 0;
}
输出样例
图片发自简书App
