#include <iostream.h>
#include <iomanip.h>
void digit(long n,long m)
{if(m>0)
cout <<setw(2)<<n%10;
if(m>1)
digit(n/10,m/10);
cout <<setw(2)<<n%10;
}
void main()
{long x,x2;
cout <<"Input a number:"<<endl;
cin >>x;
x2=1;
while(x2<x) x2*=10;
x2/=10;
digit(x,x2);
cout <<endl;
}
输入：9734526
输出：______________________________