Medicine.cpp

#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <time.h>
#include <cstring>
#include <iomanip>
using namespace std;
static int id = 35;
class Date
{
public:
    int yy, mm, dd;
    int generateDate();
};
int Date ::generateDate()
{
    yy = 2010 + rand() % (2020 - 2010 + 1);
    mm = 1 + rand() % 12;
    if (mm == 1 || mm == 3 || mm == 5 || mm == 7 || mm == 8 || mm == 10 || mm == 12)
        dd = 1 + rand() % 31;
    else if (mm == 4 || mm == 6 || mm == 9 || mm == 11)
        dd = 1 + rand() % 30;
    else if (yy % 4 == 0 && mm == 2)
        dd = 1 + rand() % 28;
    else
        dd = 1 + rand() % 27;
    int date = yy * 10000 + mm * 100 + dd;
    return date;
}
static int total = 35;
class Medicine
{
private:
    int mid;
    char name[20];
    int mfg;
    int exp;
    char symptom[30];
    int no_of_tablets;

public:
    float mrp;
    void AddMedicineDetails();
    void showMedicinesData();
    void searchMedicine(string s);
    void updateStock(string t, int qt);
};

void Medicine ::AddMedicineDetails()
{
    fstream file;
    mid = ++id;
    cout << "Enter name of medicine :" << endl;
    cin >> name;
    mrp = 20 + rand() % 50;
    Date d1, d2;
    mfg = d1.generateDate();
    exp = d2.generateDate();
    int temp1 = mfg / 10000;
    int temp2 = exp / 10000;
    if (temp1 > temp2)
    {
        temp2 = exp % 10000;
        exp = exp / 10000 + 1;
        exp = exp * 10000 + temp2;
    }
    cout << "What is it used for :" << endl;
    cin >> symptom;
    no_of_tablets = 1000 + rand() % (2000 - 1000 + 1);
    file.open("medicines.txt", ios::app | ios::out);
    file << mid << "    " << name << "   " << mrp << "  " << mfg << "   " << exp << "   " << symptom << "   " << no_of_tablets << "\n";
    file.close();
    cout << "Medicine successfully added !!!" << endl;
}

void Medicine::showMedicinesData()
{
    fstream file;
    file.open("medicines.txt", ios::in);
    if (!file)
    {
        cout << "\n\t\t\tNo Data Is Present...........";
    }
    else
    {
        file >> mid >> name >> mrp >> mfg >> exp >> symptom >> no_of_tablets;
        cout << "\t+-----------------------------------------------------------------------------------------------+";
        cout <<"\n\t"<< setw(5) << "|sNO    "
             << setw(27) << "|      Medicine name        "
             << setw(6) << "| MRP   "
             << setw(19) << "|  Manufacturing Date "
             << setw(13) << "|   Expiry Date       "
             << setw(7) << "|Stock  |";
        cout << "\n\t-------------------------------------------------------------------------------------------------";

        while (!file.eof())
        {
            cout.setf(ios::adjustfield);
            cout << "\n"
                 << "\t|" << setw(5) << mid << "  ";
            cout << "|" << setw(25) << name << "  ";
            cout << "|" << setw(5) << mrp << "  ";
            cout << "|" << setw(11) << (mfg % 100) << "/" << setw(2) << ((mfg / 100) % 100) << "/" << ((mfg / 10000)) << "  ";
            cout << "|" << setw(11) << (exp % 100) << "/" << setw(2) << ((exp / 100) % 100) << "/" << ((exp / 10000)) << "  ";
            cout << "|" << setw(5) << no_of_tablets << "  |\n";
            cout << "\t|" << setw(8) << "  |" << setw(28) << "  |" << setw(8) << "  |" << setw(22) << "  |" << setw(22) << "  |" << setw(8) << "  |";
            file >> mid >> name >> mrp >> mfg >> exp >> symptom >> no_of_tablets;
        }
    }
    file.close();
    cout << "\n\t+-----------------------------------------------------------------------------------------------+";
}

void Medicine ::searchMedicine(string s)
{
    ifstream file;
    file.open("medicines.txt", ios::in | ios ::binary);
    if (!file)
    {
        cout << "\n\t\tNo Data found .........."
             << "\n";
    }
    else
    {
        // file.read();
        file >> mid >> name >> mrp >> mfg >> exp >> symptom >> no_of_tablets;
        if (s == symptom)
        {
            cout.setf(ios::right);
            cout << "\n"
                 << setw(25) << mid;
            cout << "|" << setw(25) << name;
            cout << "|" << setw(25) << mrp;
            cout << "|" << setw(25) << mfg;
            cout << "|" << setw(25) << exp;
            cout << "|" << setw(25) << no_of_tablets;
        }
    }
    file.close();
}

void Medicine ::updateStock(string t, int qt)
{
    fstream file, file1;
    file.open("medicines.txt", ios::in | ios ::binary);
    file1.open("temp.txt", ios ::out | ios ::binary);
    if (!file)
    {
        cout << "\n\t\t\tNo Data Is Present...........";
    }
    else

    {
        file.seekg(0);
        file >> mid >> name >> mrp >> mfg >> exp >> symptom >> no_of_tablets;

        while (!file.eof())
        {
            if (t == name)
            {
                no_of_tablets = no_of_tablets - qt;
            }

            file1 << mid << "    " << name << "   " << mrp << "  " << mfg << "   " << exp << "   " << symptom << "   " << no_of_tablets << "\n";
            file >> mid >> name >> mrp >> mfg >> exp >> symptom >> no_of_tablets;
        }
    }
    file1.close();
    file.close();
    remove("medicines.txt");
    rename("temp.txt", "medicines.txt");
}