main.cpp

#include <string>
#include <fstream>
#include <iostream>
#include "stringset.h"

using namespace std;

void spellcheck(void)
{
  Stringset S;
  string word;
  string alternative;

  string alphabet = "abcdefghijklmnopqrstuvwxyz";

  ifstream wordfile("words.txt");
  while (wordfile >> word)
    S.insert(word);
  wordfile.close();

  cout << "Dictionary loaded.  Please enter words to spell check.\n";

  while (cin >> word) {
    cout << "Possible alternatives for word '" << word << "':\n";

    // TBD: print out all words that differ by exactly one character...

    alternative = word;

    for (char &w:alternative) {
      for (const char &c:alphabet) {
        w = c;
        if (S.find(alternative) && alternative != word)
          cout << alternative << "\n";
      }
      alternative = word;
    }

  }
}

void test(void)
{
  Stringset S;
  string key, command;

  while(cin >> command) {
    
    if (command == "insert") {
      
      cin >> key;
      if (S.find(key))
	cout << "Error!  Key " << key << " already in structure!\n";
      else
	S.insert(key);

    } else if (command == "remove") {
      
      cin >> key;
      if (!S.find(key)) 
	cout << "Error!  Key " << key << " not in structure!\n";
      else
	S.remove(key);

    } else if (command == "find") {

      cin >> key;
      if (S.find(key))
	cout << "Key " << key << " present.\n";
      else
	cout << "Key " << key << " absent.\n";

    } else if (command == "print") {

      cout << "Contents of structure:\n";
      S.print();

    } else if (command == "quit") {

      break;

    } else {

      cout << "Error!  Unknown command '" << command << "'!\n";

    }
  }
}

int main(void)
{
  //test();
  spellcheck();
  return 0;
}