Undeclared identifer

[victorduh0]

trying to figure out why I can't call my functions roulette,high low, 21,

#include <iostream>
#include <cstdlib>
using namespace std;

int highLow(int bet1)
{
    int rando1 = rand() % (11 - 1) + 1;
    int rando2 = rand() % (11 - 1) + 1;
    int guess;
    
    cout << rando1 << endl;
    cout << "Will the next number be 1)higher or 2)lower?" << endl;
    cin >> guess;
    
    cout << rando2 << endl;
    
    if ((rando1 < rando2) && (guess == 1))
    {
        return bet1;
    }
    else if ((rando1 > rando2) && (guess == 2))
    {
        return bet1;
    }
    else
    {
        return -bet1;
    }
}

int roulette(int bet2)
{
    int colorNum;
    int ranNum;
    
    string color;
    
    cout << "Pick a color (red or black)" << endl;
    cin >> color;
    
    cout << "Pick a number between (1 and 13)" << endl;
    cin >> colorNum;
    
    int x = rand() % 2;
    if(x == 0) cout<<"red";
    else cout << "black";
    
    ranNum= rand() % (14 - 1) + 1;
    cout << " ";
    cout << ranNum << endl;
    
    if(color== "red" && x == 'red' && colorNum == ranNum)
    {
        return bet2*16;
    }
    else if(color== "black" && x == 'black' && colorNum == ranNum)
    {
        return bet2*16;
    }
    else if(colorNum == ranNum)
    {
        return bet2*4;
    }
    else if((color =="red" && x == 'black') || (color =="black" && x == 'red'))
    {
        return bet2;
    }
    else
    {
        return -bet2;
    }
}

int twentyOne(int bet3)
{
    int card1 = rand() % (11 - 1) + 1;
    int card2 = rand() % (11 - 1) + 1;
    int sum = 0;
    int dealersHand;
    string playAgain;
    
    string choice;
    
    cout << "Your cards are: " << card1 << " and " << card2 << endl;
    
    sum = card1 + card2;
    
    cout << "Your card sum is " << sum << endl;
    
    while (sum < 21)
    {
        cout << "Would you like to hit or stay?" << endl;
        cin >> choice;
        
        if(choice == "hit")
        {
            sum += rand() % (11 - 1) + 1;
            cout << sum << endl;
        }
        else if(choice == "stay")
        {
            cout << sum << endl;
            break;
        }
    }
    
    cout << "Your sum is " << sum << endl;
    
    if(sum > 21)
    {
        cout << "You lose" << endl;
    }
    
    cout << "Now it is the dealer's turn" << endl;
    
    dealersHand = rand() % (24 - 16) + 16;
    cout << "Dealers hand is " << dealersHand << endl;
    
    if(dealersHand >= 22 && sum <= 21)
    {
        return bet3*3;
    }
    else if(sum > dealersHand && sum <=21)
    {
        return bet3*3;
    }
    else if(sum == dealersHand)
    {
        return bet3;
    }
    else
    {
        return -bet3;
    }
 
}

int betAmount(int userBalance)
{
    int userBet;
    
    cout << "How much would you like to bet?" << endl;
    cin >> userBet;
    
    if(userBet>userBalance)
    {
        cout << "Insufficient balance" << endl;
        return 5;
    }
    else
    {
        return userBet;
    }
}

void mainMenu()
{
    cout << "1) Play High-Low" << endl;
    cout << "2) Play Roulette" << endl;
    cout << "3) Play 21"  << endl;
    cout << "4) Set betting amount" << endl;
    cout << "5) Leave Casino " << endl;
}

int main()
{
    srand(time(0));
    int userBalance=rand() % (201 - 100) + 100;
    
    while(1)
    {
        cout << "Your balance is " << userBalance << endl;
        mainMenu();
        
        cout << "What game would you like to play?" << endl;
        
        int choice;
        int userBet = 5;
        
        cin >> choice;
        
        if(choice == 1)
        {
            while(1)
            {
                int payout = highLow(bet1);
                userBalance += payout;
                
                cout<< "Would you like to continue playing(y/n)" << endl;
                char play;
                cin >> play;
                
                if(play == 'y')
                {
                    highLow(bet1);
                }
                if(play == 'n')
                {
                    break;
                }
                if(userBalance <= 0)
                {
                    cout<<"You are bankrupt"<<endl;
                    break;
                }
            }
        }
        if(choice == 2)
        {
            while(1)
            {
                int payout = roulette(bet2);
                userBalance += payout;
                
                cout<< "Would you like to continue playing(y/n)" << endl;
                char play;
                cin >> play;
                
                if(play == 'y')
                {
                    roulette(bet2);
                }
                if(play == 'n')
                {
                    break;
                }
                if(userBalance <= 0)
                {
                    cout<<"You are bankrupt"<<endl;
                    break;
                }
            }
        }
        if(choice == 3)
        {
            while(1)
            {
                int payout = twentyOne(bet3);
                userBalance += payout;
                
                cout<< "Would you like to continue playing(y/n)" << endl;
                char play;
                cin >> play;
                
                if(play == 'y')
                {
                    twentyOne(bet3);
                }
                if(play == 'n')
                {
                    break;
                }
                if(userBalance <= 0)
                {
                    cout<<"You are bankrupt"<<endl;
                    break;
                }
            }
        }
        if(choice == 4)
        {
            userBet = betAmount(userBalance);
        }
        if(choice == 5)
        {
            cout<< "Goodbye" << endl;
            return 0;
        }
}

[Peter87]

There are no variables named bet1, bet2 and bet3 inside the main() function.
Perhaps you meant to pass userBet as argument int payout = highLow(userBet); ?

Also note that strings use double quotes. Things like 'red' will not do what you expect.