带字符串数组的分段错误c ++

Dictionary::Dictionary(string filename){

    ifstream inF;

    inF.open(filename.c_str());

    if (inF.fail()){
      cerr << \"Error opening file\" <<endl;
      exit(1);
    }

    inF >> numwords;
    numwords = 3000;
    words = new string(words[numwords]);


    for(int i=0; i <= numwords - 1; i++){
      inF >> words[i];
    }
    inF.close();
  }

words = new string(words[numwords]);

words = new string[numwords];