Lab_10/3 var (IIl semester)

#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <windows.h>
#include <fstream>
#include <string>

using namespace std;

struct theState
{
    string name, capital;
    int area, population;
};
theState state[100];
int countRow = 0;
void outputScreen()
{
    cout << " Structure The State" << endl;
    cout << " _________________________________________________________" << endl;
    cout << " |№ |    Name    |  Capital   | Population |    Area     | " << endl;
    cout << " |--|------------|------------|------------|-------------|" << endl;
    for (int i = 0; i < countRow; i++)
        cout << left << " |" << setw(2) << i + 1 << "|" << setw(12) << state[i].name << "|" << setw(12)
            << state[i].capital << "|" << setw(12) << state[i].population << "|" << setw(13) << state[i].area << "|" << endl;
    cout << " _________________________________________________________" << endl;
}
void inputFile()
{
    ifstream input;
    input.open("Input.txt", ios::in);
    if (input.fail()) {
        cout << "Could not open file" << endl;
        system("pause");
    }
    do
    {
        input >> state[countRow].name >> state[countRow].capital >> state[countRow].population >> state[countRow].area;
        countRow++;
    } while (!input.eof());
    input.close();
    cout << "\nFile read out. Number of items = " << countRow << endl;
    outputScreen();
}

void outputFile()
{
    ofstream output;
    output.open("Output.txt", ios::out);
    if (output.fail())
    {
        cout << "Could not create file" << endl;
        system("pause");
    }
    for (int i = 0; i<countRow; i++)
    {
        output << setw(15) << state[i].name << " " << setw(15) << state[i].capital << " " << setw(15) << state[i].population << " " << setw(15) << state[i].area;
        if (i != countRow - 1)
            output << endl;
        if (output.fail())
            break;
    }
    output.close();
    cout << "File created" << endl;
}

void addState()
{
    int countAddRow;
    int tmpArea;
    cout << "How many lines to add: ";
    cin >> countAddRow;
    cout << "Enter area: ";
    cin >> tmpArea;
    for (int j = 0; j<countAddRow; j++)
    {
        cout << "-Enter State Data-" << endl;

        cout << "Name: ";
        cin >> state[countRow].name;
        cout << "Capital: ";
        cin >> state[countRow].capital;
        cout << "Population: ";
        cin >> state[countRow].population;
        state[countRow].area = tmpArea;
        countRow++;
    }
    cout << countAddRow << " state with area " << tmpArea << " added" << endl;
    outputScreen();
    cout << "Saving file" << endl;
    outputFile();
}

void deleteState()
{
    int findPopulation;
    theState tmp;
    cout << "Enter the population: ";
    cin >> findPopulation;
    for (int i = 0; i < countRow; i++)
    {
        if (findPopulation > state[i].population)
        {
            cout << findPopulation << ">" << state[i].population << " - delete" << endl;
            for (int ii = i; ii <= countRow; ii++)
                state[ii] = state[ii + 1];
            i--;
            countRow--;
        }
    }
    outputScreen();
    cout << "Saving file" << endl;
    outputFile();
}

int main()
{
    SetConsoleCP(1251);
    SetConsoleOutputCP(1251);
    int option;
    cout << "Structure The State" << endl;
    while (1)
    {
        cout << "1-Input from a txt file" << endl;
        cout << "2-View data" << endl;
        cout << "3-Saving to txt file" << endl;
        cout << "4-Adding N elements with the number K" << endl;
        cout << "5-Delete all items that have fewer than the specified number" << endl;
        cout << "6-Exit" << endl;
        cout << "Your choice (1-6): ";
        cin >> option;
        switch (option)
        {
        case 1: inputFile(); break;
        case 2: outputScreen(); break;
        case 3: outputFile(); break;
        case 4: addState(); break;
        case 5: deleteState(); break;
        case 6: exit(0);
        default: cout << "Invalid value entered" << endl;
            break;
        }
    }
}