Fstream v2

#include <iostream>
#include <list>
#include <fstream>
#include <string>
#include <iomanip>
#include <algorithm>
#include <iterator>
#include <vector>       //not in my life would I use this;<

using namespace std;

struct info {
    string lname;
    string fname;
    string mname;
    int age;
    string gender;
};
                        //table of contents
void start();                                       //line 36
void home();                                        //line 63
void add();                                         //line 96
void savedata(list <info>);                         //line 121
void view();                                        //line 151
void search();                                      //line 205
void stringsearch(int, string);                     //line 262
void edit(int, string, string);                     //line 327
void deleto(int, string, string);                   //line 382
void savedatav2(list <info>);                       //line 417
void sort();                                        //line 447
void stringsort(int, string);                       //line 504
void stringquicksort(vector <info>&);
void intquicksort(vector <info>&);
void savedatav3(vector <info>);

int main() {
    start();

    return 0;
}

void start() {
    char choice;

    cout << "\n-------------------------------------------------------------------------"
         << "\nSTUDENT PROFILE INFORMATION SYSTEM"
         << "\n[a] Start"
         << "\n[b] End"
         << "\nEnter your Choice: ";
    cin >> choice;
    system("cls");

    switch (choice) {
    case 'a': {
        cout << "\nLoad is Success, Match";
        home();
        break;
    }
    case 'b': {
        break;
    }
    default: {
        cout << "\nChoice is None, Mismatch";
        start();
    }
    }
}

void home() {
    char choice;

    cout << "\n-------------------------------------------------------------------------"
         << "\nSTUDENT PROFILE INFORMATION SYSTEM -> Home"
         << "\n[a] Add"
         << "\n[b] View"
         << "\n[c] End"
         << "\nEnter your Choice: ";
    cin >> choice;
    system("cls");

    switch (choice) {
    case 'a': {
        cout << "\nLoad is Success, Match";
        add();
        break;
    }
    case 'b': {
        cout << "\nLoad is Success, Match";
        view();
        break;
    }
    case 'c': {
        break;
    }
    default: {
        cout << "\nChoice is None, Mismatch";
        home();
    }
    }
}

void add() {
    list <info> adding;
    string name[4];
    int age;

    cout << "\n-------------------------------------------------------------------------"
        << "\nSTUDENT PROFILE INFORMATION SYSTEM -> Add"
        << "\nLast Name: ";
    cin >> name[0];
    cout << "\nFirst Name: ";
    cin >> name[1];
    cout << "\nMiddle Initial: ";
    cin >> name[2];
    cout << "\nAge: ";
    cin >> age;
    cout << "\nGender: ";
    cin >> name[3];

    adding.push_back({ name[0], name[1], name[2], age, name[3]});
    savedata(adding);

    system("cls");
    cout << "\nAdd is Success, Match";
    home();
}
void savedata(list <info> adding) {
    fstream file;

    file.open("lname.txt", ios::app);
    for (auto word : adding) {
        file << "\n" << word.lname;
    }
    file.close();
    file.open("fname.txt", ios::app);
    for (auto word : adding) {
        file << "\n" << word.fname;
    }
    file.close();
    file.open("mname.txt", ios::app);
    for (auto word : adding) {
        file << "\n" << word.mname;
    }
    file.close();
    file.open("age.txt", ios::app);
    for (auto word : adding) {
        file << "\n" << word.age;
    }
    file.close();
    file.open("gender.txt", ios::app);
    for (auto word : adding) {
        file << "\n" << word.gender;
    }
    file.close();
}

void view() {
    string line[5];
    fstream file[5];
    char choice;

    cout << "\nLast Name" << setw(13) << "First Name" << setw(9) << "M.I." << setw(7) << "Age" << setw(11) << "Gender\n";

    file[0].open("lname.txt");
    file[1].open("fname.txt");
    file[2].open("mname.txt");
    file[3].open("age.txt");
    file[4].open("gender.txt");
    while (getline(file[0], line[0]) && getline(file[1], line[1]) && getline(file[2], line[2]) && getline(file[3], line[3]) && getline(file[4], line[4])) {
        cout << setw(9) << line[0] << setw(13) << line[1] << setw(9) << line[2] << setw(7) << line[3] << setw(10) << line[4] << "\n";
    }
    for (int h = 0; h < 5; h++) {
        file[h].close();
    }

    cout << "\n-------------------------------------------------------------------------"
         << "\nSTUDENT PROFILE INFORMATION SYSTEM -> View"
         << "\n[a] Search"
         << "\n[b] Sort"
         << "\n[c] Home"
         << "\n[d] End"
         << "\nEnter your Choice: ";
    cin >> choice;
    system("cls");

    switch (choice) {
    case 'a': {
        cout << "\nLoad is Success, Match";
        search();
        break;
    }
    case 'b': {
        cout << "\nLoad is Success, Match";
        sort();
        break;
    }
    case 'c': {
        cout << "\nLoad is Success, Match";
        home();
        break;
    }
    case 'd': {
        break;
    }
    default: {
        cout << "\nChoice is None, Mismatch";
        view();
    }
    }
}

void search() {
    char choice;

    cout << "\n------------------------------------------------------------------------"
         << "\nSTUDENT PROFILE INFORMATION SYSTEM -> Search"
         << "\n[a] Last Name"
         << "\n[b] First Name"
         << "\n[c] Middle Initial"
         << "\n[d] Age"
         << "\n[e] Gender"
         << "\n[f] Home"
         << "\n[g] End"
         << "\nEnter your Choice: ";
    cin >> choice;
    system("cls");

    switch (choice) {
    case 'a': {
        cout << "\nLoad is Success, Match";
        stringsearch(0, "Last Name");
        break;
    }
    case 'b': {
        cout << "\nLoad is Success, Match";
        stringsearch(1, "First Name");
        break;
    }
    case 'c': {
        cout << "\nLoad is Success, Match";
        stringsearch(2, "Middle Initial");
        break;
    }
    case 'd': {
        cout << "\nLoad is Success, Match";
        stringsearch(3, "Age");
        break;
    }
    case 'e': {
        cout << "\nLoad is Success, Match";
        stringsearch(4, "Gender");
        break;
    }
    case 'f': {
        cout << "\nLoad is Success, Match";
        home();
        break;
    }
    case 'g': {
        break;
    }
    default: {
        cout << "\nChoice is None, Mismatch";
        search();
    }
    }
}

void stringsearch(int h, string word) {
    string search;
    fstream file[5];
    string line[5];
    char choice;

    cout << "\n-------------------------------------------------------------------------"
         << "\nSTUDENT PROFILE INFORMATION SYSTEM -> Search -> " << word
         << "\nSearch: ";
    cin >> search;
    system("cls");

    cout << "\nSearch is Success, Match"
         << "\nLast Name" << setw(13) << "First Name" << setw(9) << "M.I." << setw(7) << "Age" << setw(11) << "Gender\n";
    file[0].open("lname.txt");
    file[1].open("fname.txt");
    file[2].open("mname.txt");
    file[3].open("age.txt");
    file[4].open("gender.txt");
    while (getline(file[0], line[0]) && getline(file[1], line[1]) && getline(file[2], line[2]) && getline(file[3], line[3]) && getline(file[4], line[4])) {
        if (line[h] == search) {
            cout << setw(9) << line[0] << setw(13) << line[1] << setw(9) << line[2] << setw(7) << line[3] << setw(10) << line[4] << "\n";
        }
    }
    for (int i = 0; i < 5; i++) {
        file[i].close();
    }

    cout << "\n-------------------------------------------------------------------------"
         << "\nSTUDENT PROFILE INFORMATION SYSTEM -> Search -> " << word
         << "\nSearch: " << search
         << "\n[a] Edit"
         << "\n[b] Delete"
         << "\n[c] Home"
         << "\n[d] End"
         << "\nEnter your Choice: ";
    cin >> choice;
    system("cls");

    switch (choice) {
    case 'a': {
        cout << "\nLoad is Success, Match";
        edit(h, word, search);
        break;
    }
    case 'b': {
        cout << "\nLoad is Success, Match";
        deleto(h, word, search);
        break;
    }
    case 'c': {
        cout << "\nLoad is Success, Match";
        home();
        break;
    }
    case 'd': {
        break;
    }
    default: {
        cout << "\nChoice is None, Mismatch";
        stringsearch(h, word);
    }
    }
}

void edit(int h, string word, string search) {
    fstream file[5];
    string line[5];
    string edit;
    list <info> editing;

    cout << "\n-------------------------------------------------------------------------"
         << "\nSTUDENT PROFILE INFORMATION SYSTEM -> Search -> " << word << "-> Edit"
         << "\nEdit: ";
    cin >> edit;
    system("cls");

    file[0].open("lname.txt");
    file[1].open("fname.txt");
    file[2].open("mname.txt");
    file[3].open("age.txt");
    file[4].open("gender.txt");
    while (getline(file[0], line[0]) && getline(file[1], line[1]) && getline(file[2], line[2]) && getline(file[3], line[3]) && getline(file[4], line[4])) {
        int age = stoi(line[3]);

        if (line[h] == search) {
            line[h] = edit;

            if (word == "Last Name") {
                editing.push_back({ line[h], line[1], line[2], age, line[4] });
            }
            else if (word == "First Name") {
                editing.push_back({ line[0], line[h], line[2], age, line[4] });
            }
            else if (word == "Middle Name") {
                editing.push_back({ line[0], line[1], line[h], age, line[4] });
            }
            else if (word == "Age") {
                int age = stoi(line[h]);
                editing.push_back({ line[0], line[1], line[2], age, line[4] });
            }
            else if (word == "Gender") {
                editing.push_back({ line[0], line[1], line[2], age, line[h] });
            }
        }
        else {
            editing.push_back({ line[0], line[1], line[2], age, line[4] });
        }
    }
    for (int i = 0; i < 5; i++) {
        file[i].close();
    }

    savedatav2(editing);

    system("cls");
    cout << "\nEdit is Success, Match";
    home();
}

void deleto(int h, string word, string search) {
    fstream file[5];
    string line[5];
    string edit;
    list <info> editing;

    cout << "\n-------------------------------------------------------------------------"
        << "\nSTUDENT PROFILE INFORMATION SYSTEM -> Search -> " << word << "-> Delete"
        << "\nDelete: ";
    cin >> edit;
    system("cls");

    file[0].open("lname.txt");
    file[1].open("fname.txt");
    file[2].open("mname.txt");
    file[3].open("age.txt");
    file[4].open("gender.txt");
    while (getline(file[0], line[0]) && getline(file[1], line[1]) && getline(file[2], line[2]) && getline(file[3], line[3]) && getline(file[4], line[4])) {
        int age = stoi(line[3]);

        if (line[h] != search) {
            editing.push_back({ line[0], line[1], line[2], age, line[4] });
        }
    }
    for (int i = 0; i < 5; i++) {
        file[i].close();
    }

    savedatav2(editing);

    system("cls");
    cout << "\nDelete is Success, Match";
    home();
}

void savedatav2(list <info> adding) {
    fstream file;

    file.open("lname.txt");
    for (auto word : adding) {
        file << "\n" << word.lname;
    }
    file.close();
    file.open("fname.txt");
    for (auto word : adding) {
        file << "\n" << word.fname;
    }
    file.close();
    file.open("mname.txt");
    for (auto word : adding) {
        file << "\n" << word.mname;
    }
    file.close();
    file.open("age.txt");
    for (auto word : adding) {
        file << "\n" << word.age;
    }
    file.close();
    file.open("gender.txt");
    for (auto word : adding) {
        file << "\n" << word.gender;
    }
    file.close();
}

void sort() {
    char choice;

    cout << "\n------------------------------------------------------------------------"
        << "\nSTUDENT PROFILE INFORMATION SYSTEM -> Sort"
        << "\n[a] Last Name"
        << "\n[b] First Name"
        << "\n[c] Middle Initial"
        << "\n[d] Age"
        << "\n[e] Gender"
        << "\n[f] Home"
        << "\n[g] End"
        << "\nEnter your Choice: ";
    cin >> choice;
    system("cls");

    switch (choice) {
    case 'a': {
        cout << "\nLoad is Success, Match";
        stringsort(0, "Last Name");
        break;
    }
    case 'b': {
        cout << "\nLoad is Success, Match";
        stringsort(1, "First Name");
        break;
    }
    case 'c': {
        cout << "\nLoad is Success, Match";
        stringsort(2, "Middle Initial");
        break;
    }
    case 'd': {
        cout << "\nLoad is Success, Match";
        stringsort(3, "Age");
        break;
    }
    case 'e': {
        cout << "\nLoad is Success, Match";
        stringsort(4, "Gender");
        break;
    }
    case 'f': {
        cout << "\nLoad is Success, Match";
        home();
        break;
    }
    case 'g': {
        break;
    }
    default: {
        cout << "\nChoice is None, Mismatch";
        sort();
    }
    }
}

void stringsort(int h, string word) {
    fstream file[5];
    string line[5];
    vector <info> sorting;

    file[0].open("lname.txt");
    file[1].open("fname.txt");
    file[2].open("mname.txt");
    file[3].open("age.txt");
    file[4].open("gender.txt");
    while (getline(file[0], line[0]) && getline(file[1], line[1]) && getline(file[2], line[2]) && getline(file[3], line[3]) && getline(file[4], line[4])) {
        int age = stoi(line[3]);
        sorting.push_back({ line[0], line[1], line[2], age, line[4] });
    }
    for (int i = 0; i < 5; i++) {
        file[i].close();
    }

    if (word == "Last Name") {
        stringquicksort(sorting);
    }
    else if (word == "First Name") {
        cout << "\nComing Soon...";
    }
    else if (word == "Middle Name") {
        cout << "\nComing Soon...";
    }
    else if (word == "Age") {
        intquicksort(sorting);
    }
    else if (word == "Gender") {
        cout << "\nComing Soon...";
    }

    savedatav3(sorting);
    system("cls");

    cout << "\nSort is Success, Match";
}

void stringquicksort(vector<info>& nums) {
    if (!nums.size()) return;

    int left = 0, right = nums.size() - 1;
    while (left <= right) {
        string pivot = nums[left].lname;
        while (left <= right && nums[right].lname < pivot) {
            right--;
        }
        while (left <= right && nums[left].lname > pivot) {
            left++;
        }
        swap(nums[left], nums[right]);
    }

    info temp = nums[0];
    nums[0] = nums[right];
    nums[right] = temp;
    stringquicksort(nums);
}

void intquicksort(vector<info>& nums) {
    if (!nums.size()) return;

    int left = 0, right = nums.size() - 1;
    while (left <= right) {
        int pivot = nums[left].age;
        while (left <= right && nums[right].age < pivot) {
            right--;
        }
        while (left <= right && nums[left].age > pivot) {
            left++;
        }
        swap(nums[left], nums[right]);
    }

    info temp = nums[0];
    nums[0] = nums[right];
    nums[right] = temp;
    stringquicksort(nums);
}

void savedatav3(vector <info> adding) {
    fstream file;

    file.open("lname.txt");
    for (auto word : adding) {
        file << "\n" << word.lname;
    }
    file.close();
    file.open("fname.txt");
    for (auto word : adding) {
        file << "\n" << word.fname;
    }
    file.close();
    file.open("mname.txt");
    for (auto word : adding) {
        file << "\n" << word.mname;
    }
    file.close();
    file.open("age.txt");
    for (auto word : adding) {
        file << "\n" << word.age;
    }
    file.close();
    file.open("gender.txt");
    for (auto word : adding) {
        file << "\n" << word.gender;
    }
    file.close();
}