errorzzzz

#include <iostream>
#include <string>
#include <ctime>
#include <windows.h>
using namespace std;

void breakTime( int seconds)
{
    clock_t temp;
    temp = clock () + seconds * CLOCKS_PER_SEC ;
    while (clock() < temp) {}
}
int main(void) {
    string final = "";
    int num1;
    string option = "";
    int num2;
    string user = "";
    string pass = "";
    string yesorno = "";
    reLogin:
    system("color 0F");
    cout << "Username: ";
    cin >> user;
    cout << "\nPassword: ";
    cin >> pass;
    if(user == "Mizaki" && pass == "test123"){
        cout << "\n\n\nLogin successful.. Redirecting you in 5 seconds!";
        breakTime(5);
        system("cls");
        goto main;
        }else{
        failed:
    cout << "Login failed, do you wish to try again? ( yes/no ) ";
    cin >> yesorno;
    if(yesorno == "yes"){
        goto reLogin;
        return 0;
    }
    if(yesorno == "no"){
        cout << "Goodbye!";
        return 0;
    }else{
    goto failed;
    }
    main:
        cout << "Enter number one: ";
        cin >> num1;
        fail:
        cout << "\nEnter your option ( + / - ): ";
        cin >> option;
        cout << "\nEnter number two: ";
        cin >> num2;
        if(option == "+"){
            num1 + num2 = final;
            cout << "Your final product is " << final << endl;
            return 0;
        }
        if(option == "-"){
            num1 - num2 = final;
            cout << "Your final product is " << final << endl;
            return 0;
        }else{
        cout << "Please enter a valid option..\n\n Redirecting you back to the option for you to retry in 5 seconds";
        breakTime(5);
        goto fail;
        return 0;
        }

    }
    return 0;
}