#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <stdint.h>
// c++
#include <iostream>
#include <string>
#include </usr/include/linux/kernel.h>
using namespace std;
static void __reverse (char* start, char* end)
{
    char tmp;

    while (end > start)
    {
        tmp = *end;                     /* save end of the string int tmp variable */
        *end-- = *start;                /* write to the end of the string its beginning */
        *start++ = tmp;             /* and write to the beginning stuff from tmp */
    }
}



char* itoa (int value, char* buffer, int base, int * length)
{
    static const char digits [] = "0123456789ABCDEF";
    char* tmpBuffer = buffer;
    int sign = 0;
    int quot, rem;
    *length = 3;
    if ( (base >= 2) && (base <= 16) )                  /* check if the base is valid */
    {
        if (base == 10 && (sign = value) <0)        /* check base & sign of value in the tmp copy */
        {
            value = -value;
        }

        do                                      /* calculate quotient & reminder */
        {
            quot = value / base;
            rem = value % base;
            *buffer ++ = digits[rem];               /* append the reminder to the string */
            *length += 1;
        } while ((value = quot));
        *length -= 3;
        if (sign < 0)                           /* if negative value add a sign */
        {
            *buffer++ = '-';
        }

        __reverse(tmpBuffer, buffer - 1);       /* reverse the string */

    }

    *buffer = '\0';
    return tmpBuffer;
}

/*==============================================================================
 Static function definitions
==============================================================================*/
/*------------------------------------------------------------------------------
 function name: __reverse
 description:       local function reversing order of a string
 parameters:        pointer to the beginning of a string, pointer to the end of a string
 returned value:    none
------------------------------------------------------------------------------*/



int main(int argc, char **argv)
{
    int i;
    uint8_t array[] = {0, 1, 6};
    unsigned int length = 3;
    uint8_t ret=0;
    char str[64]; // TODO  use malloc over length here !!
    char c;
    //  char ** str = (char **) malloc(length * sizeof(char *));
    unsigned int iter=0;
    for (iter=0; iter<length;iter++)
    {
        int sublength;
        itoa(array[iter],&c,10,&sublength);
        str[iter]=c;
        printf("itoa of %d = %d ; str[%d] now is %d \n\r",iter,c,iter,str[iter]);
    }
    //Now the first length character of str are the number (e.g if array= {4,5,6} then str should be {'4','5','6','whatever','whateve',...}
    for(i=0;i<length;i++)
    {
        printf("buffer[%d]= %d\n\r",i,str[i]);
    }
    return 0;

}