C++: Why I can't pass a pair of iterators to regex_search?

Question

I try to pass a pair of iterators to represent a string sequence:

    #include
    #include
    using namespace std;
    int main(int          


        

Answer 1

regex_search expects a const_iterator but you are passing a std::string::iterator.

---

Make your string const

const string test("abc");

Declare a const_iterator

std::string::const_iterator iter = test.begin();
std::string::const_iterator end = test.end();

Or use cbegin and cend

auto iter = test.cbegin();
auto end = test.cend();