//
//#include "stdafx.h"
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <clocale>
#include <ctype.h>
#include <conio.h>

#define MAX_SENTENCES 500
#define MAX_WORDS 50

#define _CRT_SECURE_NO_WARNINGS

#pragma warning (disable : 4996)


using namespace std;

class string_parser {
public:
    int get_sentences(char *p, int *sentence, int *coord);
};

int main()
{
    setlocale(LC_ALL, "rus");

    string_parser sp;

    char str[1024];
    char fname[128];
    FILE *fp;

    printf("Имя файла: ");
    scanf("%s", &fname[0]);
    fp = fopen(fname, "r");

    if (fp == NULL) {
        printf("Ошибка открытия файла\n");
        return -1;
    }

    char *p = &str[0];
    memset(&str[0], '\0', sizeof(str));

    while (!feof(fp)) {
        *p = fgetc(fp);
        p++;
    }

    *(p - 1) = ' ';

    int coord[MAX_SENTENCES][2];
    int sentence = 0;

    memset(coord, -1, sizeof(coord));

    sp.get_sentences(&str[0], &sentence, &coord[0][0]);

    printf("Предложений: %d\n", sentence);


    p = &str[0];
    int pos = 0;
    int curs = 0;

    int s[3] = { 1, 0, 2 };

    for (int i = 0;i <= sentence;i += 3) {
        for (int j = 0;j<3;j++) {
            if (i + s[j] >= sentence)
                break;
            getch();
            system("cls");
            while (*p != '\0') {
                if (coord[i + s[j]][0] == pos)
                    putchar('[');
                if (coord[i + s[j]][1] == pos - 1)
                    putchar(']');
                putchar(*p);
                pos++;
                p++;
            }
            p = &str[0];
            pos = 0;
            curs++;
        }
    }

    printf("\n");
    system("pause");

    return 0;
}

int string_parser::get_sentences(char *p, int *sentence, int *coord)
{
    int pos, ld, inside;

    pos = ld = inside = 0;

    *sentence = 0;

    while (*p != '\0') {
        if ((isalpha(*p) || isdigit(*p)) && !inside) {
            *(coord + *sentence * 2 + 0) = pos;
            inside = 1;
            pos++;
            p++;
            continue;
        }
        if (*p == '.' || *p == '!' || *p == '?') {
            if (pos - ld == 1) {
                ld = pos;
                pos++;
                p++;
                continue;
            }
            ld = pos;
            *(coord + *sentence * 2 + 1) = pos;
            (*sentence)++;
            inside = 0;
        }
        p++;
        pos++;
    }

    return 0;
}