C++ I cannot get my program to block words properly

[rastafari]

My program blocks words when they are separate but when you add anything it does not censor it. Example ----delta--- should be blocked but does not. Not sure where the problem is, I'm very new to c++

int main()
{
    string bad[] = {"alpha", "beta", "gamma", "delta"};
    set<string> bad_words(bad, bad + sizeof(bad) / sizeof(string));

    string input;
    while(cin >> input)
    {
         if (bad_words.find(input)!=bad_words.end()){
            cout << "CENSORED ";
        }
    else {
            cout << input << " ";
        }
    }
}

 

[Deleted member 2829]

The find function obviously only finds a word when it's on its own, not when it is embedded in another word. You'd need another approach to do this.
What I would do is take the easy way out. Make a copy of the input string, remove all non-alphabetic characters from it, and use that in the lookup.
This is assuming that all the "bad" words are purely alphabetic, which may or may not be the case.