#include <iostream>
#include<regex>
using namespace std;
int main() {
string s ("/home/fypj/build/simple-loops.cc/");
smatch m;
regex e ("(\\.[^.]+)$");
regex_search (s,m,e);
cout << m.str() <<endl;
cout << m.str(1) <<endl;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZTxyZWdleD4KdXNpbmcgbmFtZXNwYWNlIHN0ZDsKCmludCBtYWluKCkgewoJCgkgc3RyaW5nIHMgKCIvaG9tZS9meXBqL2J1aWxkL3NpbXBsZS1sb29wcy5jYy8iKTsKCSBzbWF0Y2ggbTsKCSByZWdleCBlICgiKFxcLlteLl0rKSQiKTsKCSByZWdleF9zZWFyY2ggKHMsbSxlKTsKCQoJIGNvdXQgPDwgbS5zdHIoKSA8PGVuZGw7CgkgY291dCA8PCBtLnN0cigxKSA8PGVuZGw7CglyZXR1cm4gMDsKfQ==