c++ strings

I'm not sure about how allocation and cleanup works with c++ strings. Does this leak memory?


string get_filename(char * path)
{
    string file_name = path;
    int pos = file_name.find_last_of('\\');
    if (pos!=string::npos)
    {
        file_name = file_name.substr(pos+1); // what happens to the memory here?
    }
    return file_name;
}

ID:V5Jwqs5f here, it's worse then i though

think of something like asdfqwerty (but i dont know that its asdfqwerty)
s = asdfqwerty
t = wer
answer must equal asdfqrty

i tried to find where t starts, and its length and then concantonate the two substrings around that. but that doesnt work for some reason.