#include <stdio.h>
#include <stdlib.h>


void reverse(char * c, char limiter)
{
    int i = 0;
    int j = 0;
    while (*(c+j)!=limiter) j++;

    for (i = 0, j = j - 1; i < j; i++,j--)
    {
        *(c+i) ^= *(c+j);
        *(c+j) ^= *(c+i);
        *(c+i) ^= *(c+j);
    }
}

void reverse2(char ** c, int edge)
{
    int i = 0;
    int j = edge;

    char * temp;
    for (i = 0, j = j - 1; i < j; i++,j--)
    {
        temp = *(c+i);
        *(c+i) = *(c+j);
        *(c+j) = temp;
    }
}

char ** transform(char * c)
{
    int i = 0;
    int start = i;
    char ** words = malloc(sizeof(char*) * 20);
    int j = 0;
    while (*(c+i)!='\0')
    {
        if (*(c+i) == ' ')
        {
            *(c+i) = NULL;
            *(words+j++) = (c+start);
            start = i+1;
        }
        i++;
    }

    if (*(c+start) != NULL)
    {
        *(words+j++) = (c+start);
        start = i+1;
    }
    *(words+j) = NULL;

    return words;
}

int finder(char * s, char limiter)
{
    printf("AAAAAAAAAAAAAAAAAAAAAAAA");
    int i;
    int result;
    i = result = 0;
    while(*(s+i)!='\0')
    {
        if (*(s+i)==' ') result++;
        if (*(s+i)==limiter) break;
    }
    return result;
}

void print(char ** words)
{
    int i = 0;
    while (*(words+i) !=NULL)
    {
        printf("%s ", *(words+i));
        i++;
    }
}

int main()
{
    int edge = 2;
    char ** words;
    char * s;

    s = "I am a coxol person\0";
    printf("%s\n",s);
    edge = finder(s, 'x');
    printf("VVVVVVVVVVVVVVVVVVVVVVVVVVVV");
    words = transform(s);
    reverse2(words,edge);
    print(words);

    return 0;
}