// Name: PlayOneRound()
// Params: a BinSearchTree object
// Returns: none
// Purpose: plays one round of 20Qs by asking if the person the user is thinking of has a specific characteristic,
// then tries to guess the person after narrowing down the characteristics using LearnsNew()
public void PlayOneRound(BinSearchTree bst)
{
// start at the root
Node temp = bst.Root;
// while we're not at a leaf node
while (temp.YesPtr != null && temp.NoPtr != null)
{
// ask the node's question and get the answer
Console.Write("Is this person " + temp.Question + "? ");
answer = Console.ReadLine();
// based on the answer, follow either Y/N pointer
if (answer.ToUpper() == "Y")
{
temp = temp.YesPtr;
}
else
{
temp = temp.NoPtr;
}
}
// program tries to guess the person
Console.Write("Is it " + temp.Question + "? ");
answer = Console.ReadLine();
// if the guess is correct, the program wins
if (answer.ToUpper() == "Y")
{
Console.WriteLine("Hurray! I win!");
}
// else the program asks who it was and how to tell the difference
else
{
LearnNew(temp);
}
}
