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

int get_number_length(int value){

    if (value > 0 && value < 10) return 1;

    int clc = 0;
    if (value < 0) {
        value = value * -1;
        clc ++;
    }
    while (value > 10 ){
        clc ++;
        value = value / 10;
    }
    
    return clc + 1;
}

char *my_itoa(int value){

    int taille = get_number_length(value);

    char *rslt = malloc(taille + 1 * sizeof(char));
    if (rslt == NULL) return NULL;

    if (value < 0){
        value = value * -1;
        *rslt = '-';
    }
    
    *(rslt + taille) = '\0';
    
    if(value < 10){
        if( *rslt == '-')*(rslt + 1) = value + 48;
        else *(rslt) = value + 48;
        return rslt;
    }

    taille --;
    while (taille > 0){
        *(rslt + taille) = 48 +value % 10;
        value = value / 10;
        taille --;
    }

    return rslt;
}
/*
int main(){
    printf("TESTS 1 \n"); 
    printf("%i\n", get_number_length(7));       //1
    printf("%i\n",get_number_length(-97163));  //6
    printf("%i\n",get_number_length(82622));   //5

    printf("TESTS 2\n");
    char *rslt = "";

    rslt = my_itoa(-172);     // "-172"
    printf("%s\n", rslt);
    free(rslt);
    rslt = my_itoa(2);        // "2"
    printf("%s\n", rslt);
    free(rslt);
    rslt = my_itoa(-2829302); // "-2829302"
    printf("%s\n", rslt);
    free(rslt);

}*/