Virus? C++ Program

#include <iostream>
#include <string>
#include <fstream>

using namespace std;



int main()
{
    //Strings:


    string day;
    string rday;
    string action;
    string monday;
    string insidemonday;
    string tuesday;
    string insidetuesday;
    string wednesday;
    string insidewednesday;
    string thursday;
    string insidethursday;
    string friday;
    string insidefriday;
    string saturday;
    string insidesaturday;
    string sunday;
    string insidesunday;


    //Program Start:


backtostart:
    cout << "                          Welcome to LifePrint V1";
    cout << "\n \n";
    cout << "What would you like to do? (Write/Read)\n";
    getline(cin, action);

    //Action: WRITE

    if (action == "Write" | action == "write")
    {
    backtowrite:
        cout << "Please enter the Day you want to write in.\n";
        getline(cin, day);


        if (day == "monday" | day == "Monday")

        {
            system("cls");
            cout << "                          Welcome to LifePrint V1";
            cout << "\n \n";
            cout << "Welcome to Monday, You can now start writing Below:\n";
            getline(cin, monday, '\0');
            system("pause");
            cout << "\n";

            ofstream monfile("Monday.dat");
            if (monfile.is_open())

            {
                monfile << monday;
                monfile.close();
                cout << "Your day was saved Successfully!\n";
                system("pause");
                return 0;
            }

            else { cout << "Can't Open File\n"; }
        }

        if (day == "Tuesday" | day == "tuesday")

        {
            system("cls");
            cout << "                          Welcome to LifePrint V1";
            cout << "\n \n";
            cout << "Welcome to Tuesday, You can now start writing Below:\n";
            getline(cin, tuesday, '\0');
            system("pause");
            cout << "\n";

            ofstream tuesfile("Tuesday.dat");
            if (tuesfile.is_open())

            {
                tuesfile << tuesday;
                tuesfile.close();
                cout << "Your day was saved Successfully!\n";
                system("pause");
                return 0;
            }

            else { cout << "Can't Open File\n"; }
        }

        if (day == "Wednesday" | day == "wednesday")

        {
            system("cls");
            cout << "                          Welcome to LifePrint V1";
            cout << "\n \n";
            cout << "Welcome to Wednesday, You can now start writing Below:\n";
            getline(cin, wednesday, '\0');
            system("pause");
            cout << "\n";

            ofstream wedfile("Wednesday.dat");
            if (wedfile.is_open())

            {
                wedfile << wednesday;
                wedfile.close();
                cout << "Your day was saved Successfully!\n";
                system("pause");
                return 0;
            }

            else { cout << "Can't Open File\n"; }
        }

        if (day == "Thursday" | day == "thursday")

        {
            system("cls");
            cout << "                          Welcome to LifePrint V1";
            cout << "\n \n";
            cout << "Welcome to Thursday, You can now start writing Below:\n";
            getline(cin, wednesday, '\0');
            system("pause");
            cout << "\n";

            ofstream thufile("Thursday.dat");
            if (thufile.is_open())

            {
                thufile << thursday;
                thufile.close();
                cout << "Your day was saved Successfully!\n";
                system("pause");
                return 0;
            }

            else { cout << "Can't Open File\n"; }
        }

        if (day == "Friday" | day == "friday")

        {
            system("cls");
            cout << "                          Welcome to LifePrint V1";
            cout << "\n \n";
            cout << "Welcome to Friday, You can now start writing Below:\n";
            getline(cin, friday, '\0');
            system("pause");
            cout << "\n";

            ofstream frifile("Friday.dat");
            if (frifile.is_open())

            {
                frifile << friday;
                frifile.close();
                cout << "Your day was saved Successfully!\n";
                system("pause");
                return 0;
            }

            else { cout << "Can't Open File\n"; }
        }

        if (day == "Saturday" | day == "saturday")

        {
            system("cls");
            cout << "                          Welcome to LifePrint V1";
            cout << "\n \n";
            cout << "Welcome to Saturday, You can now start writing Below:\n";
            getline(cin, saturday, '\0');
            system("pause");
            cout << "\n";

            ofstream satfile("Saturday.dat");
            if (satfile.is_open())

            {
                satfile << saturday;
                satfile.close();
                cout << "Your day was saved Successfully!\n";
                system("pause");
                return 0;
            }

            else { cout << "Can't Open File\n"; }
        }

        if (day == "Sunday" | day == "sunday")

        {
            system("cls");
            cout << "                          Welcome to LifePrint V1";
            cout << "\n \n";
            cout << "Welcome to Sunday, You can now start writing Below:\n";
            getline(cin, sunday, '\0');
            system("pause");
            cout << "\n";

            ofstream sunfile("Sunday.dat");
            if (sunfile.is_open())

            {
                sunfile << sunday;
                sunfile.close();
                cout << "Your day was saved Successfully!\n";
                system("pause");
                return 0;
            }

            else { cout << "Can't Open File\n"; }
        }

        //Final else of Write

        else
        {
            cout << "That is not a Day of the Week, Try again.\n";
            system("pause");
            cin.clear();
            system("cls");
            goto backtowrite;
        }
    }


    //Action: READ


    if (action == "Read" | action == "read")
    {
        backtoread:
        cout << "Please Enter the Day you want to Read:\n";
        getline(cin, rday);

        if (rday == "Monday" | rday == "monday")
        {
            ifstream rmonfile("Monday.dat");
            if (rmonfile.is_open())

            {
                std::getline(rmonfile, insidemonday, '\0');
                system("cls");
                std::cout << "Monday:\n";
                std::cout << "\n";
                std::cout << "\n";
                std::cout << insidemonday;
                std::cout << "\n";
                std::cout << "\n";
                std::system("pause");
                rmonfile.close();
                return 0;
            }

            else {
                std::cout << "Can't open file\n";
                system("pause");
            }
        }

            if (rday == "Tuesday" | rday == "tuesday")
            {
                ifstream rtuefile("Tuesday.dat");
                if (rtuefile.is_open())

                {
                    std::getline(rtuefile, insidetuesday, '\0');
                    system("cls");
                    std::cout << "Tuesday:\n";
                    std::cout << "\n";
                    std::cout << "\n";
                    std::cout << insidetuesday;
                    std::cout << "\n";
                    std::cout << "\n";
                    std::system("pause");
                    rtuefile.close();
                    return 0;
                }

                else {
                    std::cout << "Can't open file\n";
                    system("pause");
                }
        }

            if (rday == "Wednesday" | rday == "wednesday")
            {
                ifstream rwedfile("Wednesday.dat");
                if (rwedfile.is_open())

                {
                    std::getline(rwedfile, insidewednesday, '\0');
                    system("cls");
                    std::cout << "Wednesday:\n";
                    std::cout << "\n";
                    std::cout << "\n";
                    std::cout << insidewednesday;
                    std::cout << "\n";
                    std::cout << "\n";
                    std::system("pause");
                    rwedfile.close();
                    return 0;
                }

                else {
                    std::cout << "Can't open file\n";
                    system("pause");
                }
            }

            if (rday == "Thursday" | rday == "thursday")
            {
                ifstream rthufile("Thursday.dat");
                if (rthufile.is_open())

                {
                    std::getline(rthufile, insidethursday, '\0');
                    system("cls");
                    std::cout << "Thursday:\n";
                    std::cout << "\n";
                    std::cout << "\n";
                    std::cout << insidethursday;
                    std::cout << "\n";
                    std::cout << "\n";
                    std::system("pause");
                    rthufile.close();
                    return 0;
                }

                else {
                    std::cout << "Can't open file\n";
                    system("pause");
                }
            }

            if (rday == "Friday" | rday == "friday")
            {
                ifstream rfrifile("Friday.dat");
                if (rfrifile.is_open())

                {
                    std::getline(rfrifile, insidefriday, '\0');
                    system("cls");
                    std::cout << "Friday:\n";
                    std::cout << "\n";
                    std::cout << "\n";
                    std::cout << insidefriday;
                    std::cout << "\n";
                    std::cout << "\n";
                    std::system("pause");
                    rfrifile.close();
                    return 0;
                }

                else {
                    std::cout << "Can't open file\n";
                    system("pause");
                }
            }

            if (rday == "Saturday" | rday == "saturday")
            {
                ifstream rsatfile("Saturday.dat");
                if (rsatfile.is_open())

                {
                    std::getline(rsatfile, insidesaturday, '\0');
                    system("cls");
                    std::cout << "Saturday:\n";
                    std::cout << "\n";
                    std::cout << "\n";
                    std::cout << insidesaturday;
                    std::cout << "\n";
                    std::cout << "\n";
                    std::system("pause");
                    rsatfile.close();
                    return 0;
                }

                else {
                    std::cout << "Can't open file\n";
                    system("pause");
                }
            }


            if (rday == "Sunday" | rday == "sunday")
            {
                ifstream rsunfile("Sunday.dat");
                if (rsunfile.is_open())

                {
                    std::getline(rsunfile, insidesunday, '\0');
                    system("cls");
                    std::cout << "Sunday:\n";
                    std::cout << "\n";
                    std::cout << "\n";
                    std::cout << insidesunday;
                    std::cout << "\n";
                    std::cout << "\n";
                    std::system("pause");
                    rsunfile.close();
                    return 0;
                }

                else {
                    std::cout << "Can't open file\n";
                    system("pause");
                }
            }

            //Final Else of Write

            else {
            cout << "That is not an Available Day, Try again.\n";
            cout << "\n";
            system("pause");
            cin.clear();
            system("cls");
            goto backtoread;
                                                         }
    }

          //Final Else of Action

    else {
        cout << "That is not an available Action, try again.\n";
        cout << "\n";
        cin.clear();
        system("pause");
        system("cls");
        goto backtostart;
                                                        }
}