pls help with errors

#include <iostream>
#include <cstdlib>
#include <string>
#include <Windows.h>
#include <stdio.h>
#include <mmsystem.h>

using namespace std;

void Battle(string mob, int level, int beggining){
    int monsterhp;
    int monsterdamage;
    string Opponent;
    int PlayerHealth;
    int PlayerLevel;
    int BattleChoice;
    int coins;
    string CurrentSword;
    string inventory;
    int SwordDamage;
    string backchoice;
    int exp = 0;
    int maxexp = 100;
    coins = 0;
    if (beggining == 1){
        PlayerHealth = 100;
        PlayerLevel = 1;
        CurrentSword = "NoobSword";
        SwordDamage = 5;
        inventory += "NoobSword";
    }
    if (mob == "Goblin"){
        Opponent = mob;
        monsterdamage = 5 * level;
        monsterhp = 25 * level;
        system("cls");
    }
    if (mob == "Goblin Boss"){
        Opponent = mob;
        monsterdamage = 10 * level;
        monsterdamage  = 20 * level;
        monsterhp = 50 * level;
        system("cls");
    }
    while (monsterhp >= 1){
            cout << "Coins: " << coins << "  Exp: "<< exp << "/" << maxexp;
            cout << "\n\nFighting: " << mob << "  Level: " << level << "  Hp: " << monsterhp << endl;
            cout << "____________";
            cout << "\n\n1. Attack";
            cout << "\n2. Block";
            cout << "\n3. Inventory";
            cout << "\n4. quit\n";
            cout << "____________";
            cout << "\nHealth:" << PlayerHealth << "\nLevel:" << PlayerLevel << endl;
            cout << "\n\nSword: " << CurrentSword << "\nDamage: " << SwordDamage << "\n\n> ";
            cin >> BattleChoice;
            if (BattleChoice == 4){
                exit(1);
            }
            else if (BattleChoice == 2) {
                system("cls");
                cout << "The monster tried to attack you but you blocked it";
                Sleep(1500);
                cout << "\n\nPlus 5 coins!\n\n";
                coins += 5;
                Sleep(1500);
                system("cls");
                system("pause");
            }
            else if (BattleChoice == 3){
                system("cls");
                cout << "Inventory:\n\n";
                Sleep(0100);
                cout << inventory << "\n\n\n";
                system("pause");
                system("cls");
                }
            else if (BattleChoice == 1){
                system("cls");
                cout << "You have attacked the monster";
                Sleep(1500);
                monsterhp = monsterhp - SwordDamage;
                cout << "\n\nThe monster has lost " << SwordDamage << " Health, it now has " << monsterhp << " Health";
                Sleep(1500);
                cout << "\n\n+5 Experience!";
                exp += 5;
                Sleep(1500);
                cout << "\n\nThe monster attacked you and you lost " << monsterdamage;
                PlayerHealth = PlayerHealth - monsterdamage;
                Sleep(1500);
                system("cls");
                if (PlayerHealth <=0) {
                    cout << "You Have Died";
                    Sleep(3000);
                    exit(1);
                }
                else if (monsterhp <=0) {
                    cout << "You Have Won The Battle!";
                }

            }
        }

    }
void carvania(){
    int gotoc;
    cout << "\n__________________";
    cout << "\n1. Go to the shop";
    cout << "\n2. Quit";
    cout << "\n__________________";
    cout << "\n\n>";
    cin >> gotoc;
    if (gotoc == 1){

    }
    else{
        exit(1);
    }
}


void scene(int sc) {
    string inventory;
    if (sc == 1){
        int coins  = 0;
        system("cls");
        int PlayChoice;
        cout << "Coins:"<< coins;
        cout << "\n\nWhere Am I? What am i doing here?";
        Sleep(1000);
        cout << "\n\nChoices:";
        cout << "\n\n1) Standup";
        cout << "\n2) Look Behind you";
        cout << "\n3) look up";
        cout << "\n4) quit\n\n";
        cin >> PlayChoice;
        if (PlayChoice == 1){
            cout << "You Stand up and look around";

        }
        else if (PlayChoice == 2){
            cout << "\n\nYou got attacked by a suspicous creature";
            cout << "\n You Have Died, Try Again";
            Sleep(2000);
            system("cls");
            cout << "\n\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            Sleep(2000);
            exit(1);
        }
        else if (PlayChoice == 3){
            cout << "\n\nYou got attacked by a suspicous creature";
            cout << "\n You Have Died, Try Again";
            Sleep(2000);
            system("cls");
            cout << "\n\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            Sleep(2000);
            exit(1);
        }
        else if (PlayChoice == 4){
            cout << "\n\nQuiting...";
            Sleep(1000);
            exit(1);
        }
    }
    else if (sc == 2){
    system("cls");
    cout << "Y";
    Sleep(0300);
    system("cls");
    cout << "Yo";
    Sleep(0300);
    system("cls");
    cout << "You";
    Sleep(0300);
    system("cls");
    cout << "You l";
    Sleep(0300);
    system("cls");
    cout << "You lo";
    Sleep(0300);
    system("cls");
    cout << "You loo";
    Sleep(0300);
    system("cls");
    cout << "You look";
    Sleep(0300);
    system("cls");
    cout << "You look a";
    Sleep(0300);
    system("cls");
    cout << "You look ar";
    Sleep(0300);
    system("cls");
    cout << "You look aro";
    Sleep(0300);
    system("cls");
    cout << "You look arou";
    Sleep(0300);
    system("cls");
    cout << "You look aroun";
    Sleep(0300);
    system("cls");
    cout << "You look around";
    Sleep(0300);
    system("cls");
    cout << "You look around a";
    Sleep(0300);
    system("cls");
    cout << "You look around an";
    Sleep(0300);
    system("cls");
    cout << "You look around and";
    Sleep(0300);
    system("cls");
    cout << "You look around and r";
    Sleep(0300);
    system("cls");
    cout << "You look around and re";
    Sleep(0300);
    system("cls");
    cout << "You look around and rea";
    Sleep(0300);
    system("cls");
    cout << "You look around and real";
    Sleep(0300);
    system("cls");
    cout << "You look around and realis";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise y";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise yo";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise you";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise your";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise your i";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise your in";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise your in a";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise your in a c";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise your in a ca";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise your in a cav";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise your in a cave";
    Sleep(0300);
    system("cls");
    cout << "You look around and realise your in a cave.";
    Sleep(0300);
    cout << "\n\nChoices:";
    Sleep(0300);
    cout << "\n\n1) Go forward";
    cout << "\n2) Stay";
    cout << "\n3) walk backwards";
    cout << "\n4) quit\n\n";
    int PlayChoice;
    cin >> PlayChoice;
    if (PlayChoice == 1 || 2){
        string CurrentSword;
        int SwordDamage;
        Sleep(1500);
        system("cls");
        cout << "\n\nAn Old Man Approches you...";
        Sleep(1500);
        cout << "\n\nHello? you say";
        Sleep(2500);
        cout << "\n\n Hello... I guess that your new around here...\n My name is Gary! i help with many people...";
        Sleep(1500);
        cout << "\n\n How did i even get here? you asked confused";
        Sleep(2500);
        cout << "\n\n oh.. that happens to everyone, well anyways, heres a sword\n\nSWORD OBTAINED!\n\n its not that good but it does the job\n You Should go now!";
        CurrentSword = "NoobSword";
        SwordDamage = 5;
        inventory += "\n\nNoobSword";
        Sleep(2500);
        cout << "\n\nYou walk away having no idea about whats going on..";
        Sleep(2500);
        cout << "\n\n You look behind you and somehow he wasnt there anymore, Your still really confused but you just go on...\n\n You then walk forward and see that theres two paths.";
        Sleep(2500);
        cout << "\n\n Which path do you go to?\n\n1) left\n\n2) right\n\n";
        cin >> PlayChoice;
        if (PlayChoice == 1 || 2){
            Sleep(0500);
            system("cls");
            cout << "\n\nYou Encounter a goblin";
            Sleep(0500);
            cout << "\n\n You go into battle mode";
            Sleep(1000);
            Battle("Goblin", 1, 1);
            Sleep(1000);
            system("cls");



        }

    } else {
        cout << "\n\nYou got attacked by a suspicous creature";
            cout << "\n You Have Died, Try Again";
            Sleep(2000);
            system("cls");
            cout << "\n\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            cout << "\nGAME OVER";
            Sleep(2000);
            exit(1);
    }

    }
    else if (sc == 3){
        int playchoice3;
        cout << "\nYou are thankful that you survived";
        cout << "\n\n You then walk forward and see a door";
        cout << "\n\nChoices";
        cout << "\n\n1) Walk towards the door\n2) stay\n3) quit\n\n"; // WORKING ON THIS PART DOOOOOOOOOOOOOOD
        cin >> playchoice3;
        if (playchoice3 == 1 || 2){
            cout << "\n\nOut of nowhere the doors open and you see\n a city with all kinds of colors and stores\n\n You then walk in an meet gary, he then says\nOh sorry for talking so fast over there, i was just in a hurry, im sorry i couldnt tell you about this place\n\n";
            Sleep(3000);
            cout << "Then you look angry and relieved so you say,";
            Sleep(3000);
            cout << "\nWhat is this town?";
            Sleep(1000);
            cout << "\n\nThen gary says";
            Sleep(1000);
            cout << "\nOh this is called carvania, Its really populated, and fun things to do, I reccomend you going to a shop, Your sword isnt good enough for all of the monsters ahead of you.\n\n";
            system("pause");
            system("cls");

        }
        else if (playchoice3 == 3{
            exit(1);
        }
}

void LoadingScreen(){
    int load = rand() % (2000 + 1 - 0400) + 0400;
        system("cls");
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |                   |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |-                  |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |--                 |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |---                |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |----               |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |-----              |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |------             |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |-------            |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |-------            |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |--------           |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |-----------        |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |------------       |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls"); // HERE DOOOOOOOOOD
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |-------------      |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |-------------      |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |---------------    |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |-----------------  |";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        load = rand() % (2000 + 1 - 0400) + 0400;
        cout << "\n\nText Adventure: The Cave" << endl;
        cout << "Made By: Daniel C." << endl;
        cout << "\n\n   #####################";
        cout << "\n   |-------------------|";
        cout << "\n   #####################";
        Sleep(load);
        system("cls");
        cout << "Loaded!";
    }


void startup(){
    system("cls");
        cout << "LOADING PROGRAM";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        system("cls");
        cout << "LOADING PROGRAM";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        system("cls");
            system("cls");
        cout << "LOADING PROGRAM";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        system("cls");
        cout << "LOADING PROGRAM";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        cout << ".";
        Sleep(0700);
        system("cls");
        cout << "FINISHED LOADING";
}

int main() {

    string choice;
    cout << "Start\nQuit\nplay music\n\n";
    cin >> choice;
    if (choice == "start"){

        startup();
        Sleep(0500);
        LoadingScreen();
        Sleep(0500);
        scene(1);
        Sleep(0500);
        scene(2);
        Sleep(0500);
        system("cls");
        scene(3);

    }
    else if (choice == "quit"){
        exit(1);
    }
    else if (choice == "skip"){
        scene(1);
        Sleep(0500);
        scene(2);
        Sleep(0500);
        scene(3);
    }


    return 0;
    }
}