#include "stdafx.h"
#include <iostream>
#include <clocale>
#include <cstdio>
#include <cstdlib>
#include <memory.h>
#include <cstring>
#include <Windows.h>
#include <crtdbg.h>
#include <string.h>
#include <conio.h>

using namespace std;

void PrintMenu();
char* Create();
int Count(char* s);

int main()
{
    SetConsoleCP(1251);
    SetConsoleOutputCP(1251);

    int menu = 0;

    char* s = NULL;
    int count = 0;
    bool f = false;

    do
    {
        PrintMenu();
        cin >> menu;
        switch (menu)
        {
        case 1:
        {
            if (s != NULL)
            {
                delete[] s;
                count = 0;
                cout << "Массив очищен\n";

            }

            s = Create();

            break;
        }

        case 2:
        {
            if ((s == NULL) || (s[0] == 13))
            {
                cout << "Сначала введите строку\n";
            }
            else
            {
                count = Count(s);
                f = true;
            }
            break;
        }

        case 3:
        {
            if (f == false)
            {
                cout << "Сначала нужно обработать строку\n";
            }
            else
            {
                if ((s == NULL) || (s[0] == 13))
                {
                    cout << "Сначала введите строку\n";
                }
                else
                {
                    cout << "количество четырехбуквенных слов = " << count << "\n";
                    f = false;

                }
            }
            break;
        }
        case 0:
        {
            break;
        }

        default:
            cout << "Такого варианта нет.\n";
        }

    } while (menu != 0);

    delete[] s;
    return 0;
}

void PrintMenu()
{
    cout << "-------------------\n";
    cout << "1.Ввод \n";
    cout << "2.Обработка\n";
    cout << "3.Вывод\n";
    cout << "0.Выход\n";
    cout << "-------------------\n";
}

int Count(char* s)
{
    int count = 0;
    int cur = 0;
    int i = 0;
    while (s[i] != '\0')
    {
        if ((s[i] != ' ') && (s[i] != ',') && (s[i] != '.') && (s[i] != '!') && (s[i] != '?')
            && (s[i] != ':') && (s[i] != ';'))
        {
            cur++;
        }
        else
        {
            if (cur == 4)
            {
                count++;
            }
            cur = 0;
        }
        i++;
    }

    if (cur == 4)
        count++;
    return count;
}

char* Create()
{
    int len = 0;
    char* s = NULL;
    cout << "Введите строку\n";

    s = new char[1];
    s[0] = '\0';
    char ch = 0;
    while (true)
    {
        ch = getchar();

        if (ch == '\n')
        {
        break;
        }
        len = strlen(s);
        char* tmp = new char[len + 2];
        strcpy(tmp, s);
        tmp[len] = ch;
        tmp[len + 1] = '\0';
        delete[] s;

        s = tmp;
    }

    return s;
}