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// Rules of craps:
// First roll: Player rolls 2 , 3, or 12, player loses and the game ends.
// Player rolls 7 or 11, player wins and the game ends.
// Player rolls 4, 5, 6, 8, 9, or 10, the number becomes the point number.
// Player will continue to roll and win only if the roll is the point number.
// Player will lose if roll is 7.
#include <cstdlib>
#include <ctime>
#include <iostream>
struct DieRoll {
int die1;
int die2;
int roll;
};
// winOrLost: accepts integer to check for victory or 0 if not to check;
// returns false if player looses, true if wins
bool winOrLost(int pointtoget = 0);
DieRoll rollDice();
int main ()
{
std::srand(std::time(0));
int ans = 1;
do {
if(winOrLost(0))
std::cout << "You win!" << std::endl;
else
std::cout << "Sorry, you lose." << std::endl;
std::cout << "\nDo you want to play again? Enter 1 for yes => ";
std::cin >> ans;
std::cout << std::endl;
} while(ans==1);
return 0;
}
bool winOrLost(int pointtoget)
{
DieRoll currentroll = rollDice();
std::cout << "die one: " << currentroll.die1
<< "; die two: " << currentroll.die2 << std::endl;
// If pointtoget != 0, it means this is the second roll, to be
// compared with a 4, 5, 6, 7, 8, 9, 10.
// After comparisone, we can return true or false.
// Otherwise (if pointtoget == 0), we need to check all the combinations
if(pointtoget) { // if pointtoget != 0
std::cout << " * you rolled " << currentroll.roll << std::endl;
if(currentroll.roll == pointtoget) {
return true;
} else if (currentroll.roll == 7) {
return false;
} else {
std::cout << "Roll again to get " << pointtoget << std::endl;
return winOrLost(pointtoget);
}
} else {
std::cout << " * First roll: you rolled " << currentroll.roll
<< std::endl;
switch (currentroll.roll) {
case 2:
case 3:
case 12:
return false;
break;
case 7:
case 11:
return true;
break;
case 4:
case 5:
case 6:
case 8:
case 9:
case 10:
{
std::cout << "Roll again to get " << currentroll.roll << std::endl;
return winOrLost(currentroll.roll);
}
break;
default:
break;
}
}
// we should never get here!
std::cout << "ALERT! Some unforeseen problem occurred." << std::endl;
return false;
}
DieRoll rollDice()
{
DieRoll tmp;
tmp.die1 = rand() % 6 + 1;
tmp.die2 = rand() % 6 + 1;
tmp.roll = tmp.die1 + tmp.die2;
return tmp;
}
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