In the game of blackjack, if the player scores higher than the dealer or the dealer goes over 21, and the player does not go over 21, then he wins his bet (in addition to keeping his original wager). If he scores 21 or less, and the same as the dealer, the hand is a push, and he keeps his bet. Otherwise, if he scores lower than the dealer, or goes over 21 (regardless of whether or not the dealer also does so), then he loses his bet.
A "blackjack" is a special kind of 21 point hand that beats all other hands. In such a case, the player wins 1.5 times his original bet. If both dealer and player have a blackjack, then the hand is a push. Note that if the dealer has a blackjack, and the player has a 21 (but does not have blackjack), then the dealer wins, and the player loses his wager.
You are given an int bet indicating the players wager, an int dealer indicating the dealer's score, and an int player indicating the player's score. Finally, you are given an int blackjack, which will be equal to 1 if the player has a blackjack, or 0 otherwise. Likewise, you are given the int dealerBlackjack.
You are to return the amount of money the player wins or loses on the hand. A win should return a positive number, either the player's bet, or 1.5 times his bet. A loss should be returned as a negative number. A push should return 0.