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#include <graphics.h>
#include <conio.h>
#include <stdio.h>
#include <vector>
#include <string.h>
#include <stdlib.h>
#include <windows.h>
#include <cctype>
#include <algorithm>

using namespace std;
struct contacts {
    char name[10];
    char number[10];
    char fullname[15];
    char address[20];
    char city[15];
    char email[35];
};

int proiz;
std::vector<contacts> carr;
contacts tmp;
int currentPage = 0;
const int contactsPerPage = 15;
char searchStr[20] = "";
std::vector<contacts> originalCarr;
int sortState = 0;
int sortBy = 0;
int sortOrder = 0;
std::string contactToEdit;

void CheckFile();
void SortingF(int NumTableSort, int NumTypeSort);
void TableOut();
void TitlesOut();
void ScreenOut();
void mouseClicks();
void ShowContactFile();
void DrawButtons();
bool InsideButton(int x, int y, int x1, int y1, int x2, int y2);
void AddContact();
void SaveContacts();
void DeleteContact(const std::string& contactName);
std::string GetContactName();
void EditContact(const std::string& contactName);
std::vector<contacts> SearchContacts(const char* searchStr);
void ShowContactDetails(int contactIndex);

void ShowSplashScreen() {
    int graphdriver = DETECT, graphmode;
    initgraph(&graphdriver, &graphmode, "");
    setbkcolor(BLACK);
    cleardevice();
    setcolor(WHITE);
    settextstyle(DEFAULT_FONT, HORIZ_DIR, 2);
    outtextxy(100, 200, "Author: Elzar Shakulov");
    outtextxy(100, 250, "Group: EPI-3-22");
    outtextxy(100, 300, "Program's name: Phonebook");
    delay(1000);
    closegraph();
}

int main() {
    char *filename1;
    filename1 = "contacts.txt";
    FILE *file1 = fopen(filename1, "r");
    if (file1 == NULL) {
        printf("Error opening file\n");
        return 1;
    }

    carr.clear();

    contacts c;
    while (fscanf(file1, "%s %s %s %s %s %s\n", c.name, c.number, c.fullname, c.address, c.city, c.email) != EOF) {
        carr.push_back(c);
    }
    originalCarr = carr;
    fclose(file1);

    ShowSplashScreen();
    ScreenOut();
    ShowContactFile();
    mouseClicks();
    closegraph();
    SaveContacts();
    return 0;
}

void SaveContacts() {
    FILE* file1 = fopen("contacts.txt", "w");
    if (file1 == NULL) {
        printf("Error opening file for writing\n");
        return;
    }

    for (int i = 0; i < carr.size(); i++) {
        fprintf(file1, "%s %s %s %s %s %s\n", carr[i].name, carr[i].number, carr[i].fullname, carr[i].address, carr[i].city, carr[i].email);
    }

    fclose(file1);
}


void AddContact() {
    cleardevice();
    outtextxy(30, 60, "Enter contact name:");
    char name[20];
    int c, i = 0;
    while ((c = getch()) != '\r' && i < 20) {
        if (c == '\b' && i > 0) {
            i--;
            name[i] = '\0';
            outtextxy(30, 80, "                ");
            outtextxy(30, 80, name);
        } else if (c >= ' ' && c <= '~' && i < 19) {
            i == 0 ? name[i] = toupper(c) : name[i] = c;
            name[i + 1] = '\0';
            outtextxy(30, 80, name);
            i++;
        }
    }

    outtextxy(30, 120, "Enter contact number:");
    char number[15];
    bool numberExists = false;
    do {
        numberExists = false;
        int i = 0;
        while ((c = getch()) != '\r' && i < 15) {
            if (c == '\b' && i > 0) {
                i--;
                number[i] = '\0';
                outtextxy(30, 140, "                ");
                outtextxy(30, 140, number);
            } else if (c >= '0' && c <= '9' && i < 14) {
                number[i] = c;
                number[i + 1] = '\0';
                outtextxy(30, 140, number);
                i++;
            }
        }

        for (size_t i = 0; i < carr.size(); i++) {
            if (strcmp(carr[i].number, number) == 0) {
                numberExists = true;
                outtextxy(30, 160, "Number already exists. Enter a different number:");
                outtextxy(30, 140, "                ");
                break;
            }
        }
    } while (numberExists);

    outtextxy(30, 180, "Enter contact full name:");
    char fullname[20];
    i = 0;
    bool spaceFlag = false;
    while ((c = getch()) != '\r' && i < 20) {
        if (c == '\b' && i > 0) {
            i--;
            fullname[i] = '\0';
            outtextxy(30, 200, "                    ");
            outtextxy(30, 200, fullname);
            if (spaceFlag) {
                spaceFlag = false;
            }
        } else if ((isalpha(c) || isspace(c)) && i < 19) {
            if (isspace(c)) {
                if (!spaceFlag) {
                    spaceFlag = true;
                    fullname[i] = '_';
                    fullname[i + 1] = '\0';
                    outtextxy(30, 200, fullname);
                    i++;
                }
            } else {
                fullname[i] = c;
                fullname[i + 1] = '\0';
                outtextxy(30, 200, fullname);
                i++;
            }
        }
    }

    for (int j = 0; j < strlen(fullname); j++) {
        if (fullname[j] == ' ') {
            fullname[j] = '_';
        }
    }

    outtextxy(30, 240, "Enter contact address:");
    char address[30];
    i = 0;
    spaceFlag = false;
    while ((c = getch()) != '\r' && i < 30) {
        if (c == '\b' && i > 0) {
            i--;
            address[i] = '\0';
            outtextxy(30, 260, "                              ");
            outtextxy(30, 260, address);
            if (spaceFlag) {
                spaceFlag = false;
            }
        } else if ((isalnum(c) || isspace(c)) && i < 29) {
            if (isspace(c)) {
                if (!spaceFlag) {
                    spaceFlag = true;
                    address[i] = '_';
                    address[i + 1] = '\0';
                    outtextxy(30, 260, address);
                    i++;
                }
            } else {
                address[i] = c;
                address[i + 1] = '\0';
                outtextxy(30, 260, address);
                i++;
            }
        }
    }

    for (int j = 0; j < strlen(address); j++) {
        if (address[j] == ' ') {
            address[j] = '_';
        }
    }

    outtextxy(30, 300, "Enter contact city:");
    char city[15];
    i = 0;
    spaceFlag = false;
    while ((c = getch()) != '\r' && i < 15) {
        if (c == '\b' && i > 0) {
            i--;
            city[i] = '\0';
            outtextxy(30, 320, "                ");
            outtextxy(30, 320, city);
            if (spaceFlag) {
                spaceFlag = false;
            }
        } else if ((isalpha(c) || isspace(c)) && i < 14) {
            if (isspace(c)) {
                if (!spaceFlag) {
                    spaceFlag = true;
                    city[i] = '_';
                    city[i + 1] = '\0';
                    outtextxy(30, 320, city);
                    i++;
                }
            } else {
                city[i] = c;
                city[i + 1] = '\0';
                outtextxy(30, 320, city);
                i++;
            }
        }
    }

    for (int j = 0; j < strlen(city); j++) {
        if (city[j] == ' ') {
            city[j] = '_';
        }
    }

    outtextxy(30, 360, "Enter contact email:");
    char email[25];
    i = 0;
    while ((c = getch()) != '\r' && i < 25) {
        if (c == '\b' && i > 0) {
            i--;
            email[i] = '\0';
            outtextxy(30, 380, "                         ");
            outtextxy(30, 380, email);
        } else if ((isalnum(c) || c == '.' || c == '@' || isspace(c)) && i < 24) {
            email[i] = c;
            email[i + 1] = '\0';
            outtextxy(30, 380, email);
            i++;
        }
    }

    contacts newContact;
    strcpy(newContact.name, name);
    strcpy(newContact.number, number);
    strcpy(newContact.fullname, fullname);
    strcpy(newContact.address, address);
    strcpy(newContact.city, city);
    strcpy(newContact.email, email);
    carr.push_back(newContact);

    cleardevice();
    ShowContactFile();
}

void SortingF(int sortBy, int sortOrder) {
    for (int i = 0; i < carr.size() - 1; i++) {
        for (int j = 0; j < carr.size() - i - 1; j++) {
            bool swapElements = false;
            if (sortBy == 0) { // Sort by name
                if (sortOrder == 0) { // Ascending order
                    if (strcmp(carr[j].name, carr[j + 1].name) > 0) {
                        swapElements = true;
                    }
                } else { // Descending order
                    if (strcmp(carr[j].name, carr[j + 1].name) < 0) {
                        swapElements = true;
                    }
                }
            } else { // Sort by number
                if (sortOrder == 0) {
                    if (strcmp(carr[j].number, carr[j + 1].number) > 0) {
                        swapElements = true;
                    }
                } else {
                    if (strcmp(carr[j].number, carr[j + 1].number) < 0) {
                        swapElements = true;
                    }
                }
            }

            if (swapElements) {
                contacts temp = carr[j];
                carr[j] = carr[j + 1];
                carr[j + 1] = temp;
            }
        }
    }
}

std::vector<contacts> SearchContacts(const char* searchStr) {
    std::string lowerSearchStr(searchStr);
    std::transform(lowerSearchStr.begin(), lowerSearchStr.end(), lowerSearchStr.begin(), ::tolower);

    if (lowerSearchStr == "") {
        return carr;
    }

    std::vector<contacts> result;
    for (int i = 0; i < carr.size(); i++) {
        std::string nameLower = carr[i].name;
        std::transform(nameLower.begin(), nameLower.end(), nameLower.begin(), ::tolower);

        if (nameLower.find(lowerSearchStr) != std::string::npos) {
            result.push_back(carr[i]);
        }
    }
    return result;
}


void ShowContactFile() {
    cleardevice();
    TableOut();
    TitlesOut();
    DrawButtons();

    char searchLabel[40] = "Showing results for: ";
    strcat(searchLabel, searchStr);
    outtextxy(350, 40, searchLabel);

    carr = SearchContacts(searchStr);

    SortingF(sortBy, sortOrder);

    int startIndex = currentPage * contactsPerPage;
    int endIndex = std::min(startIndex + contactsPerPage, (int)carr.size());

    for (int y = 53, i = startIndex; i < endIndex; i++, y += 26) {
        outtextxy(30, y, carr[i].name);
        outtextxy(180, y, carr[i].number);
    }

    int totalPages = (carr.size() + contactsPerPage - 1) / contactsPerPage;
    char pageStr[20];
    sprintf(pageStr, "Page %d/%d", currentPage + 1, totalPages);
    outtextxy(140, 450, pageStr);
    outtextxy(350, 60, "Enter search string:");
}

void DeleteContact(const std::string& contactNumber) {
    bool contactDeleted = false;

    for (int i = 0; i < carr.size(); i++) {
        if (carr[i].number == contactNumber) {
            carr.erase(carr.begin() + i);
            contactDeleted = true;
            break;
        }
    }

    if (contactDeleted) {
        cleardevice();
        ScreenOut();
        ShowContactFile();
        char deleteMsg[40];
        sprintf(deleteMsg, "Deleted contact: %s", contactNumber.c_str());
        outtextxy(450, 170, deleteMsg);
    } else {
        outtextxy(450, 170, "Contact not found!");
        Sleep(3000);
        cleardevice();
        ScreenOut();
        ShowContactFile();
    }
}


void ShowContactDetails(int contactIndex) {
    cleardevice();

    // Display the contact details
    outtextxy(30, 60, "Contact Details");
    outtextxy(30, 80, "Name: ");
    outtextxy(180, 80, carr[contactIndex].name);
    outtextxy(30, 100, "Number: ");
    outtextxy(180, 100, carr[contactIndex].number);
    outtextxy(30, 120, "Full Name: ");
    outtextxy(180, 120, carr[contactIndex].fullname);
    outtextxy(30, 140, "Address: ");
    outtextxy(180, 140, carr[contactIndex].address);
    outtextxy(30, 160, "City: ");
    outtextxy(180, 160, carr[contactIndex].city);
    outtextxy(30, 180, "Email: ");
    outtextxy(180, 180, carr[contactIndex].email);

    // Wait for a key press to return to the contact list
    outtextxy(30, 220, "Press any key to return to the contact list");
    getch();

    // Clear the screen and show the contact list again
    cleardevice();
    ShowContactFile();
}


string GetContactName() {
    string contactName;
    cleardevice();

    outtextxy(30, 60, "Enter contact name:");
    char name[20];
    int c, i = 0;
    while ((c = getch()) != '\r' && i < 20) {
        if (c == '\b' && i > 0) {
            i--;
            name[i] = '\0';
            outtextxy(30, 80, "                ");
            outtextxy(30, 80, name);
        } else if (c >= ' ' && c <= '~' && i < 19) {
            name[i] = c;
            name[i+1] = '\0';
            outtextxy(30, 80, name);
            i++;
        }
    }
    contactName = name;
    return contactName;
}

string GetContactNumber() {
    string contactNumber;
    cleardevice();

    outtextxy(30, 60, "Enter contact number:");
    char number[20];
    int c, i = 0;
    while ((c = getch()) != '\r' && i < 20) {
        if (c == '\b' && i > 0) {
            i--;
            number[i] = '\0';
            outtextxy(30, 80, "                ");
            outtextxy(30, 80, number);
        } else if (c >= ' ' && c <= '~' && i < 19) {
            number[i] = c;
            number[i+1] = '\0';
            outtextxy(30, 80, number);
            i++;
        }
    }
    contactNumber = number;
    return contactNumber;
}

void EditContact(const std::string& contactNumber) {
    bool contactEdited = false;
    std::string lowercaseContactNumber = contactNumber;
    transform(lowercaseContactNumber.begin(), lowercaseContactNumber.end(), lowercaseContactNumber.begin(), ::tolower);

    for (int i = 0; i < carr.size(); i++) {
        std::string lowercaseNumber = carr[i].number;
        transform(lowercaseNumber.begin(), lowercaseNumber.end(), lowercaseNumber.begin(), ::tolower);

        if (lowercaseNumber == lowercaseContactNumber) {
            cleardevice();


            // Edit contact name
            outtextxy(30, 60, "Enter new contact name (leave empty to keep current):");
            char name[20];
            int c, j = 0;
            while ((c = getch()) != '\r' && j < 20) {
                if (c == '\b' && j > 0) {
                    j--;
                    name[j] = '\0';
                    outtextxy(30, 80, "                ");
                    outtextxy(30, 80, name);
                } else if (c >= ' ' && c <= '~' && j < 19) {
                    j == 0 ? name[j] = toupper(c) : name[j] = c;
                    name[j + 1] = '\0';
                    outtextxy(30, 80, name);
                    j++;
                }
            }
            if (j > 0) {
                strcpy(carr[i].name, name);
            }

            // Edit contact number
            outtextxy(30, 120, "Enter new contact number (leave empty to keep current):");
            char number[15];
            j = 0;
            while ((c = getch()) != '\r' && j < 15) {
                if (c == '\b' && j > 0) {
                    j--;
                    number[j] = '\0';
                    outtextxy(30, 140, "                ");
                    outtextxy(30, 140, number);
                } else if (c >= '0' && c <= '9' && j < 14) {
                    number[j] = c;
                    number[j + 1] = '\0';
                    outtextxy(30, 140, number);
                    j++;
                }
            }
            if (j > 0) {
                strcpy(carr[i].number, number);
            }

            // Edit contact full name
            outtextxy(30, 180, "Enter new contact full name (leave empty to keep current):");
            char fullname[20];
            j = 0;
            while ((c = getch()) != '\r' && j < 20) {
                if (c == '\b' && j > 0) {
                    j--;
                    fullname[j] = '\0';
                    outtextxy(30, 200, "                ");
                    outtextxy(30, 200, fullname);
                } else if (isalpha(c) || isspace(c) && j < 19) {
                    fullname[j] = c;
                    fullname[j + 1] = '\0';
                    outtextxy(30, 200, fullname);
                    j++;
                }
            }
            if (j > 0) {
                strcpy(carr[i].fullname, fullname);
            }

            // Edit contact email
            outtextxy(30, 240, "Enter new contact email (leave empty to keep current):");
            char email[30];
            j = 0;
            while ((c = getch()) != '\r' && j < 30) {
                if (c == '\b' && j > 0) {
                    j--;
                    email[j] = '\0';
                    outtextxy(30, 260, "                ");
                    outtextxy(30, 260, email);
                } else if ((isalpha(c) || c == '@' || c == '.' || c == '_' || c == '-') && j < 29) {
                    email[j] = c;
                    email[j + 1] = '\0';
                    outtextxy(30, 260, email);
                    j++;
                }
            }
            if (j > 0) {
                strcpy(carr[i].email, email);
            }

            // Edit contact address
            outtextxy(30, 300, "Enter new contact address (leave empty to keep current):");
            char address[100];
            j = 0;
            while ((c = getch()) != '\r' && j < 100) {
                if (c == '\b' && j > 0) {
                    j--;
                    address[j] = '\0';
                    outtextxy(30, 320, "                                       ");
                    outtextxy(30, 320, address);
                } else if ((isalpha(c) || c == ' ' || c == ',' || c == '.' || c == '-' || c == '#' || c == '/') && j < 99) {
                    address[j] = c;
                    address[j + 1] = '\0';
                    outtextxy(30, 320, address);
                    j++;
                }
            }
            if (j > 0) {
                strcpy(carr[i].address, address);
            }

            cleardevice();
            ShowContactFile();

            contactEdited = true;
            break;
        }
    }

    if (!contactEdited) {

        outtextxy(450, 170, "Contact not found!");
        Sleep(3000);
        cleardevice();
        ShowContactFile();
    }
}


bool InsideButton(int x, int y, int x1, int y1, int x2, int y2) {
    return x >= x1 && x <= x2 && y >= y1 && y <= y2;
}

void mouseClicks() {
    CheckFile();

    DrawButtons();

    int x, y;
    std::string contactToDelete;

    while (1) {
        if (kbhit()) {
            break;
        }
        if (ismouseclick(WM_LBUTTONDOWN)) {
            getmouseclick(WM_LBUTTONDOWN, x, y);
            if (InsideButton(x, y, 10, 450, 100, 470)) {
                printf("Back button clicked!\n");
                if (currentPage > 0) {
                    currentPage--;
                    ShowContactFile();
                }
            } else if (InsideButton(x, y, 230, 450, 320, 470)) {
                printf("Next button clicked!\n");
                if ((currentPage + 1) * contactsPerPage < static_cast<size_t>(carr.size())) {
                    currentPage++;
                    ShowContactFile();
                }
            } else if (InsideButton(x, y, 530, 10, 620, 30)) {
                printf("Search button clicked!\n");
                outtextxy(520, 60, "                  ");
                setfillstyle(1, WHITE);
                floodfill (535, 15, WHITE);
                setbkcolor(WHITE);
                setcolor(0);
                outtextxy(540, 12, "Search");
                setbkcolor(BLACK);
                setcolor(15);

                strcpy(searchStr, "");
                int c, i = 0;
                while ((c = getch()) != '\r' && i < 20) {
                    if (c == '\b' && i > 0) {
                        i--;
                        searchStr[i] = '\0';
                    } else if (c >= ' ' && c <= '~' && i < 19) {
                        searchStr[i] = c;
                        searchStr[i+1] = '\0';
                        i++;
                    }
                    outtextxy(480, 60, "                    ");  // Clear the previous string
                    outtextxy(480, 60, searchStr);  // Draw the updated string
                }

                outtextxy(480, 60, "                    ");  // Clear the final string after Enter is pressed

                cleardevice();
                std::vector<contacts> result = SearchContacts(searchStr);
                if (result.size() > 0) {
                    carr = result;
                    currentPage = 0;
                    ShowContactFile();
                } else {
                    cleardevice();
                    outtextxy(150, 150, "No contacts found with the search string");

                    delay(1500);

                    strcpy(searchStr, "");
                    carr = originalCarr;
                    currentPage = 0;
                    cleardevice();
                    ShowContactFile();
                }



            } else if (InsideButton(x, y, 450, 10, 530, 30)) {
                printf("Clear button clicked!\n");
                strcpy(searchStr, "");
                carr = originalCarr;
                currentPage = 0;
                cleardevice();
                ShowContactFile();
            }

            // sort
            if (sortState == 0 && InsideButton(x, y, 330, 80, 410, 100)) {
                printf("Sort button clicked!\n");
                sortState = 1;
                setfillstyle(1, WHITE);
                floodfill (335, 85, WHITE);
                setbkcolor(WHITE);
                setcolor(0);
                outtextxy(350, 82, "Sort");
            }
            if (sortState == 1) {
                if (InsideButton(x, y, 450, 80, 530, 100)) {
                    printf("Name button clicked!\n");
                    sortBy = 0;
                    sortState = 2;
                    setfillstyle(1, WHITE);
                    floodfill (455, 85, WHITE);
                    setbkcolor(WHITE);
                    setcolor(0);
                    outtextxy(465, 82, "Name");
                } else if (InsideButton(x, y, 540, 80, 620, 100)) {
                    printf("Number button clicked!\n");
                    sortBy = 1;
                    sortState = 2;
                    setfillstyle(1, WHITE);
                    floodfill (545, 85, WHITE);
                    setbkcolor(WHITE);
                    setcolor(0);
                    outtextxy(555, 82, "Number");
                }
                setbkcolor(BLACK);
            } else if (sortState == 2) {
                if (InsideButton(x, y, 450, 110, 530, 130)) {
                    printf("Ascending button clicked!\n");
                    sortOrder = 0;
                    sortState = 0;
                    DrawButtons();
                } else if (InsideButton(x, y, 540, 110, 620, 130)) {
                    printf("Descending button clicked!\n");
                    sortOrder = 1;
                    sortState = 0;
                    DrawButtons();
                }
            }
            if (sortState == 0) {
                cleardevice();
                DrawButtons();
                ShowContactFile();
            }
            if (InsideButton(x, y, 330, 140, 410, 160)) {
                printf("Add button clicked!\n");
                AddContact();
            }

            if (InsideButton(x, y, 330, 170, 410, 190)) {
                printf("Delete button clicked!\n");
                contactToDelete = GetContactName();
                if (!contactToDelete.empty()) {
                    DeleteContact(contactToDelete);
                }
            }

            if (InsideButton(x, y, 330, 200, 410, 220)) {
                printf("Edit button clicked!\n");
                contactToEdit = GetContactNumber();
                if (!contactToEdit.empty()) {
                    EditContact(contactToEdit);
                }
            }
            // details
            if (InsideButton(x, y, 330, 230, 410, 250)) {
                printf("Show details button clicked!\n");
                std::string contactNumberToEdit = GetContactNumber();
                if (!contactNumberToEdit.empty()) {
                    int contactIndex = -1;
                    for (int i = 0; i < carr.size(); i++) {
                        if (carr[i].number == contactNumberToEdit) {
                            contactIndex = i;
                            break;
                        }
                    }
                    if (contactIndex != -1) {
                        ShowContactDetails(contactIndex);
                    } else {

                        outtextxy(450, 170, "Contact not found!");
                        Sleep(3000);
                        cleardevice();
                        ShowContactFile();
                    }
                }
            }

            clearmouseclick(WM_LBUTTONDOWN);
        }
        Sleep(100);
    }
}

// interfaces

void ScreenOut() {
    int graphdriver = DETECT, graphmode;
    initgraph(&graphdriver, &graphmode, "");
    setfillstyle(1, 0);
    bar(0, 0, 640, 480);
    TableOut();
    TitlesOut();
    DrawButtons();

}

void TableOut() {
    int i;
    setfillstyle(1, 0);
    setcolor(15);
    setlinestyle(0, 1, 1);
    rectangle(10, 10, 320, 440);
    line(160, 10, 160, 440);
    for (i = 49; i < 440; i = i + 26) {
        line(10, i, 320, i);
    }
}

void TitlesOut() {
    setcolor(15);
    outtextxy(30, 20, "NAME");
    outtextxy(180, 20, "NUMBER");
}

void DrawButtons() {
    /*
                setfillstyle(1, WHITE);
                floodfill (535, 15, WHITE);
                setbkcolor(WHITE);
                setcolor(0);
                outtextxy(540, 12, "Search");
                setbkcolor(BLACK);
                setcolor(15);
    */

    setcolor(15);
    rectangle(10, 450, 100, 470);
    outtextxy(35, 452, "Back");

    rectangle(230, 450, 320, 470);
    outtextxy(255, 452, "Next");

    rectangle(530, 10, 620, 30);
    outtextxy(540, 12, "Search");

    rectangle(450, 10, 530, 30);
    outtextxy(465, 12, "Clear");

    rectangle(330, 80, 410, 100);
    outtextxy(345, 82, "Sort");

    rectangle(450, 80, 530, 100);
    outtextxy(465, 82, "Name");

    rectangle(540, 80, 620, 100);
    outtextxy(555, 82, "Number");

    rectangle(450, 110, 530, 130);
    outtextxy(455, 112, "Ascending");

    rectangle(540, 110, 620, 130);
    outtextxy(545, 112, "Descending");

    rectangle(330, 140, 410, 160);
    outtextxy(345, 142, "Add");

    rectangle(330, 170, 410, 190);
    outtextxy(345, 172, "Delete");

    rectangle(330, 200, 410, 220);
    outtextxy(345, 202, "Edit");

    rectangle(330, 230, 410, 250);
    outtextxy(345, 232, "Details");
}

// utilities

void CheckFile(){
    FILE *file1 = fopen("contacts.txt", "r");
    if (file1 == NULL) printf("error finding a file");
    fseek(file1, 0, SEEK_END);
    long pos1 = ftell(file1);
    proiz = (pos1 != 0);
    fclose(file1);
}

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