Heads or Tails

#include <iostream>
#include <string>
#include <algorithm>

void game() {
    std::cout << "[*] How much money do you have? ";
    int user_money; std::cin >> user_money;

    int user_bet, user_guess, toss;
    while (user_money > 0) {
        std::cout << "[*] Place a bet. ";
        std::cin >> user_bet;
        if (user_bet > user_money) {
            std::cout << "Your bet was too large! Try again..." << std::endl;
            continue;
        }
        while (true) {
            std::cout << "Guess: 0 for heads, 1 for tails. ";
            std::cin >> user_guess;

            toss = rand() % 2;

            if (user_guess >= 0 && user_guess <= 1) {
                std::cout << "You guessed " << (user_guess == 0 ? "heads" : "tails")
                    << " and were ";
                if (toss == user_guess) {
                    std::cout << "correct!";
                    user_money += user_bet;
                } else {
                    std::cout << "incorrect!";
                    user_money -= user_bet;
                }
                std::cout << std::endl;
                break;
            } else {
                std::cout << "Invalid guess. Try again...";
            }
        }

        std::cout << "You now have $" << user_money << ".\n";
    }

    std::cout << "You're out of money." << std::endll;
}

int main() {
    std::cout << "[*] Heads or Tails [*]" << std::endl
        << "You will bet on the outcome of a coin toss." << std::endl
        << "You can only bet as much as you have." << std::endl;

    game();

    return 0;
}