Hold-at-20-or-Goal Game

Pig is a folk jeopardy dice game with simple rules: Two players race to reach 100 points. Each turn, a player repeatedly rolls a die until either a 1 ("pig") is rolled or the player holds and scores the sum of the rolls (i.e. the turn total). At any time during a player's turn, the player is faced with two decisions:

• roll - If the player rolls a
  • 1: the player scores nothing and it becomes the opponent's turn.
  • 2 - 6: the number is added to the player's turn total and the player's turn continues.
• hold - The turn total is added to the player's score and it becomes the opponent's turn.

Problem:  Simulate a single solitaire game of Pig where a player rolls until a 1 ("pig") is rolled, or the turn total is greater than or equal to 20, or the score plus the turn total is greater than or equal to 100.

Input Format:  (no input)

Output Format:

• For each roll, print a line with "Roll: " and the random die roll value (1-6).
• After a "pig" roll of 1, or a "hold", print a line with "Turn total: " followed by the turn total.  In the case of a "pig", this turn total is 0.  Then, print a line with "New score: " followed by the new score.

Sample Transcript:

Roll: 4
Roll: 6
Roll: 1
Turn total: 0
New score: 0
Roll: 6
Roll: 5
Roll: 5
Roll: 6
Turn total: 22
New score: 22
Roll: 6
Roll: 2
Roll: 2
Roll: 3
Roll: 3
Roll: 2
Roll: 5
Turn total: 23
New score: 45
Roll: 3
Roll: 4
Roll: 6
Roll: 2
Roll: 6
Turn total: 21
New score: 66
Roll: 3
Roll: 3
Roll: 4
Roll: 4
Roll: 6
Turn total: 20
New score: 86
Roll: 3
Roll: 5
Roll: 5
Roll: 6
Turn total: 19
New score: 105

Common Error:  When creating nested loops, perform loop initialization directly before the relevant loop.  Note:

<loop 1 initialization>
<loop 1>
        <loop 2 initialization>
        <loop 2>

is not the same as

<loop 1 initialization>
<loop 2 initialization>
<loop 1>   
        <loop 2>

In the latter case, <loop 2> is not properly initialized each time.

Todd Neller