Question

I am working on a program but can’t understand working with pointers when classes are involved. I know I have to allocate memory for the pointer using new and am fine with this when not using classes. I can’t find a simple tutorial to explain how to do this particular task though. Could someone please give me some help? This is the relevant snippets what I have done so far but it is outputting random characters:

"Hangman.c"
{

class Hangman
{
public:
...
char* remainingLetters();
Hangman()
 {
  char* remaining=new char[26];
 }
~Hangman();

private:
char* remaining;
}

"Hangman.cpp"
{

...
 char* Hangman::remainingLetters()
{
 ...does task to find remaining letters;

 return remaining;
 }

  ostream& operator<< (ostream &out, Hangman &game)
  {
    out << "Letters remaining are: " << game.remaining <<endl

    return out;
  }
}

"main.cpp"
{
...
cout << game;
...
}

Answer 1

You’re not initializing you member. You should have:

Hangman()
{
   remaining=new char[26];
}

Your version:

 Hangman()
 {
    char* remaining=new char[26];
 }

initializes a local variable called remaining, whose scope is the constructor.

Also you should delete[] the memory in the destructor and implement the copy constructor and assignment operator.