CIT 595 - HW5

hangman.cpp

/* James Park
 * CIT 595 HW #5
 */

#include <iostream>
#include <stdlib.h>
#include <string>
#include <string.h>
#include <fstream>
#include <time.h>
using namespace std;

/*
 * Parameter:  file to open
 * Returns random secret word from file
 */
string getSecret(char* fileName){
  string line = "James says there's nothing here!";
  ifstream myFile(fileName);
  if(myFile.is_open()){

    //gets the total number of words in the txt file
    int count = 0;
	while(getline (myFile, line)){
	  count++;
	}

	//sets a random secret number
	srand(time(NULL));
	int iSecret = rand() % count + 1;

	//clears all flags and sets file reader pointer to beginning
	myFile.clear();
	myFile.seekg(0, myFile.beg);

	//finds random secret word and line = secret word
	int newCount = 0;
	while(getline (myFile, line)){
	  newCount++;
	  if(newCount == iSecret){
	    break;
	  }
	}
	myFile.close();
	}
  else cout << "Unable to open file!\n";
  return line;
}

int main(int argc, char *argv[]) {
  //check the number of arguments
  if (argc != 2){
    cout << "No dictionary file specified!" << endl;
    return 0;
  }

  string secretWord = getSecret(argv[1]);
  if(secretWord == "James says there's nothing here!"){
    return 0;
  }
  int z = 0;
  while(secretWord[z]){
  	secretWord[z] = toupper(secretWord[z]);
  	z++;
  }

  cout << "Welcome to Hangman!" << endl;

  int length = secretWord.size() / sizeof(char);

  string blanks;
  for(int i = 0; i < length; i++){
	blanks += "_ ";
  }
  char userGuess = '\0';
  string previousGuess = "So far you guessed: ";
  char previousGuesses[1024] = {'\0'};
  int k = 6;

  bool guessedCorrect = false;
  int j = 0;
  int e = 0;
  while(!guessedCorrect && k != 0){
	cout << blanks << endl;
	if(userGuess != '\0'){
	  cout << previousGuess << endl;
	}
	cout << "Incorrect guesses remaining: " << k << endl << endl;

	//check to make sure user's guess is valid
	while(1){
	  cout << "Guess a letter: ";
	  cin >> userGuess;
	  if(isalpha(userGuess)){
	    userGuess = toupper(userGuess);
	  }
	  else{
		cout << "Please enter a valid letter!" << endl;
		continue;
      }
	  int p = 0;
	  for(int i = 0; i < 1024; i++){
	    if(userGuess == previousGuesses[i]){
		  cout << "Sorry you already guessed that." << endl;
		  break;
		}
		p++;
	  }
	  if(userGuess != previousGuesses[p]){
		break;
      }
	}
	bool isCorrect = false;
    int w = 0;
    for(int i = 0; i < secretWord.length(); i++){
	  if(secretWord[i] == userGuess){
		blanks[w] = userGuess;
		isCorrect = true;
		e++;
		if(e == length){
		  guessedCorrect = true;
		}
      }
      w += 2;
    }

    if(isCorrect){
	  cout << "Right!" << endl << endl;
	}
	else{
      cout << "Wrong!" << endl << endl;
      k--;
    }
	previousGuesses[j] = userGuess;
	j++;
	previousGuess += userGuess;
	previousGuess += " ";
  }

  if (guessedCorrect){
	cout << "You win!" << endl;
  }
  else{
    cout << "Sorry!  Too many incorrect guesses!" << endl;
  }

  cout << "The secret word was " << secretWord << "." << endl;

  return 1;
}