1 #include<iostream>
 2 #include<fstream>
 3 #include<string>
 4 using namespace std;
 5 int main(){
 6 fstream f("1.txt",ios::in|ios::out);
 7 fstream ff("3.txt",ios::out);
 8  string s;
 9 while((!f.eof())){
10     f>>s;
11 char d = ‘.‘;
12 int dian = s.find(d);
13 if(dian != string::npos)
14 {
15 ff<<s.substr(dian+1)<<endl;
16 }
17 }
18     return 0;
19 }