#include
#include
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,i;
cout<<"请输入一个正整数(不超过3位数):"<<endl;
cin>>n;
if(n==0)
{
i=1;
i++;
}
for(i=0;n!=0;i++)
{
n/=10;
}
cout<<"整数位数:"<<i<<endl;
cout<<n<<endl;
int num=0;
cin>>num;
while (num > 0)
{
n = num % 10;
cout << n << endl;
num = num / 10;
}
cin>>num;
while(num != 0){
cout<<num % 10; //取末位
num = num / 10; //舍去末位
}
return 0;
}