#include <wchar.h>
#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <wctype.h>

#define BASE_COUNT_STRUCTURE 20
#define BASE_LENGHT_STR 20
#define Current_symbol text->all_str[line]->str[i]
#define BASE_WORD_COUNT 30



struct Sentence
{
    wchar_t* str;
    int lenght;
};

struct Text
{
    struct Sentence** all_str;
    int lenght;
};

struct Words
{
    wchar_t* str;
    int count;
};


void more_memory_struct(struct Text *text, int *count_struct)
{
    int i = 0;
    text->all_str=(struct Sentence**)realloc(text->all_str,(*count_struct+BASE_COUNT_STRUCTURE)*sizeof(struct Sentence*));
    for (i=*count_struct;i<((*count_struct)+BASE_COUNT_STRUCTURE);i++)
    {
        text->all_str[i]=(struct Sentence*)malloc(sizeof(struct Sentence));
    }
    for (i=*count_struct;i<((*count_struct)+BASE_COUNT_STRUCTURE);i++)
    {
        (text->all_str[i])->str=(wchar_t*)malloc(BASE_LENGHT_STR*sizeof(wchar_t));
    }
    *count_struct+=BASE_COUNT_STRUCTURE;
}


void more_memory_sentence(struct Sentence *sentence,int* lenght_str)
{
    sentence->str=(wchar_t*)realloc(sentence->str,(*lenght_str+BASE_LENGHT_STR)*sizeof(wchar_t));
    *lenght_str+=BASE_LENGHT_STR;
}


void find_repeating_sentence(struct Text *text)
{
    int i,j,g;
    for (i=0;i<((text->lenght)-1);i++)
    {
        for (j=(i+1);j<(text->lenght);j++)
        {
            if (compare(text->all_str[i]->str,text->all_str[j]->str))
            {
                delete_repeating_sentence(text, j);
                j--;
            }
        }
    }
}

void delete_repeating_sentence(struct Text *text, int num)
{
    int i;
    free (text->all_str[num]);
    for (i=num;i<(text->lenght)-1;i++)
    {
        text->all_str[i]=text->all_str[i+1];
    }
    text->all_str[text->lenght]= NULL;
    text->lenght-=1;
}


int compare(wchar_t* str1,wchar_t* str2)
{
    int i;
    if (wcslen(str1) != wcslen(str2))
        return 0;
    else
    {
        for (i=0;i<wcslen(str1);i++)
            if (towlower(str1[i])!=towlower(str2[i]))
                return 0;
    }
    return 1;
}

int input_text(struct Text *text, int* count_struct)
{

    int i = 0;
    int line = 0;
    int current_lenght_str = 0;
    int flag_first_symbol = 0;
    int lenght_str=BASE_LENGHT_STR;
    wchar_t symbol;
    symbol=getwchar();
    while (symbol!='\n')
    {
        if (symbol!=' ')
            flag_first_symbol=1;
        if (flag_first_symbol)
        {
            Current_symbol=symbol;
            if (i==(lenght_str-1))
                more_memory_sentence(text->all_str[line],&lenght_str);
            i+=1;
            if (symbol=='.')
            {
                Current_symbol='\0';
                text->all_str[line]->lenght=i;
                line+=1;
                i=0;
                lenght_str=BASE_LENGHT_STR;
                flag_first_symbol = 0;
            }
        }
        symbol=getwchar();
        if (line == *count_struct)
            more_memory_struct(text, count_struct);

    }
    text->lenght=line;
}


int main()
{
    int i;
    setlocale(LC_CTYPE, "");
    int count_struct = 0;
    int count_words= 0;
    struct Text text = {NULL, 0};
    more_memory_struct(&text, &count_struct );
    input_text(&text, &count_struct);
    p=&text;
    find_repeating_sentence(&text);
    for (i=0; i<(text.lenght);i++)
        wprintf(L"%ls", text.all_str[i]->str);
}