c++ find any string from a list in another string -

what options have find string list in string ?

with s being std::string, tried

s.find("cat" || "dog" || "cow" || "mouse", 0); 

i want find first 1 of these strings , place in string ; if s "my cat sleeping\n" i'd 3 return value.

boost::to_upper(s); 

was applied (for wondering).

you can regex.

i don't think there's way position of match directly, first have search regex, , if there match can search string. this:

#include <iostream> #include <string> #include <regex>  using namespace std;  int main() {     string s = "my cat sleeping\n";     smatch m;     regex animal("cat|dog|cow|mouse");      if (regex_search (s,m,animal)) {         cout << "match found: " << m.str() << endl;         size_t match_position = s.find(m.str());          // in case true, in general might want check         if (match_position != string::npos) {             cout << "first animal found at: " << match_position << endl;         }     }     return 0; }