hdu 2017 字符串统计

#include<iostream>using namespace std;int main(){   int n,i;   while(cin>>n)   {        getchar();        for(i=0;i<n;i++)        {       char a;           int sum=0;           while((a=getchar())!='\n')           if(a<='9'&&a>='0')           sum++;           cout<<sum<<endl;        }   }   return 0;}