Using OOP to make a basic blackjack program. Some imporvements might be to actually account for a real deck of cards. I also don't know the rules of blackjack super well, so this is probably flawed in some way.

blackjack.cpp

// Blackjack

#include <iostream>
#include <cstdlib>


using namespace std;

#define RESET   "\033[0m"
#define BLACK   "\033[30m"      /* Black */
#define RED     "\033[31m"      /* Red */
#define GREEN   "\033[32m"      /* Green */
#define YELLOW  "\033[33m"      /* Yellow */
#define BLUE    "\033[34m"      /* Blue */
#define MAGENTA "\033[35m"      /* Magenta */
#define CYAN    "\033[36m"      /* Cyan */
#define WHITE   "\033[37m"      /* White */
#define BOLDBLACK   "\033[1m\033[30m"      /* Bold Black */
#define BOLDRED     "\033[1m\033[31m"      /* Bold Red */
#define BOLDGREEN   "\033[1m\033[32m"      /* Bold Green */
#define BOLDYELLOW  "\033[1m\033[33m"      /* Bold Yellow */
#define BOLDBLUE    "\033[1m\033[34m"      /* Bold Blue */
#define BOLDMAGENTA "\033[1m\033[35m"      /* Bold Magenta */
#define BOLDCYAN    "\033[1m\033[36m"      /* Bold Cyan */
#define BOLDWHITE   "\033[1m\033[37m"      /* Bold White */

bool win;

class Player{
	public:
		string name;
		int money;
};

int dealcard(){
	int num = rand() % 13 + 1;
	return num;
}

void game(){
	int dealamount;
	int handamount;	
	bool hit = true;
	char check;	

	cout << "Dealing two cards..." << endl;
	handamount = dealcard();
	handamount += dealcard();
	cout << "Dealing dealers card..." << endl;
	dealamount = dealcard();
	cout << "Your face up card value is: " << BOLDRED << handamount << RESET << endl;
	cout << "The dealers card is: " << BOLDBLUE << dealamount << RESET << endl;
	while (handamount < 21){
		cout << "Would you like to hit?" << endl;
		cin >> check;
		if (check == 'n' | check == 'N'){
			break;
		}
		else if (check == 'y' | check == 'Y'){
			handamount += dealcard();
			cout << "You are now up to " << BOLDRED << handamount << RESET << endl;
		}
	}
	if (handamount > 21){
		cout << "You are over 21." << endl;
		win = false;	
		return;
	}
	while (dealamount < 17){
		dealamount += dealcard();
		cout << "The dealer is now up to " << BOLDBLUE << dealamount << RESET << endl;
		if (dealamount > 21){
			cout << "You win!" << endl;
			win = true;
			return;
		}
	}
	
	if (dealamount >= handamount){
		cout << "The dealer beat you." << endl;
		win = false;
	}
	else{
		cout << "You beat the dealer!" << endl;
		win = true;
	}
	
		
}

void blackjack(){
cout <<  BOLDBLUE << "888     888                888       d8b                888      " << endl;
cout << "888     888                888       Y8P                888      " << endl;
cout << "888     888                888                          888      " << endl;
cout << "88888b. 888 8888b.  .d8888b888  888 8888 8888b.  .d8888b888  888 " << endl;
cout << "888  88b888     88bd88P   888 .88P   888     88bd88P    888 .88P " << endl;
cout << "888  888888.d888888888     888888K   888.d888888888     888888K  " << endl;
cout << "888 d88P888888  888Y88b.   888  88b  888888  888Y88b.   888  88b " << endl;
cout << "88888P  888 Y888888  Y8888P888  888  888 Y888888  Y8888P888  888 " << endl;
cout << "                                     888                         " << endl;
cout << "                                    d88P                         " << endl;
cout << "                                  888P                           " <<  RESET <<endl;
}

bool checkGameState(Player p1){
	if (p1.money <= 0){
		return false;
	}
	else{
		return true;
	}
}

int main(){
	Player p1;
	p1.money = 200;
	int bet;
	bool cont = true;	
	char check;

	cout << BOLDBLUE << "Welcome to" << RESET << endl;
	cout << endl;
	blackjack();	
	cout << "What is your name?" << endl;
	cin >> p1.name;
	cout << "Hi " + p1.name + ". You are starting off with " << p1.money << " dollars." << endl;
	while (cont == true){
		cout << "How much would you like to bet?" << endl;
		cin >> bet;
		while (p1.money - bet < 0){
			cout << "You've bet too much. Please try again." << endl;
			cin >> bet;
		}
		p1.money = p1.money - bet;
		game();
		if (win == true){
			p1.money = p1.money + 2 * bet;
		}
		if (checkGameState(p1) == false){
			cout << "You are out of money. The game is over." << endl;
			return 0;
		}
		else{
			cout << "You now have " << p1.money << " dollars." << endl;
			cout << "Would you like to play again?" << endl;
			cin >> check;
			if (check == 'y' | check == 'Y'){
				cont = true;
			}
			else{
				cont = false;
			}
		}
	}
	cout << "Thanks for playing!" << endl;
	cout << "You're leaving the casino with " << p1.money << " dollars." << endl;
	return 0;
}