#include "iostream.h"
#include "stdlib.h"
#include "stdio.h"
struct link{
int pwd;
int num;
struct link * next;
};
int len=0;
int handle(){
int l=0;
char s[100];
s[0]=0;
gets(s);
int j=0;
while(s[j]!=0){
if(s[j]<48||s[j]>57){
cout<<"请输入数字!"<<endl;
l=0;
gets(s);
j=0;
}else{
l=l*10+s[j]-48;
j++;
}
}