C split/join functions, using strtok_r -- Main test

string_sj_main.c

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

int main(int argc, char** argv) {
    char **items = NULL;
    const char *s = "Hello, I'm splitting on the space delimiter!";
    const char *delim = " ";
    char *tmp;
    int i;
    int num_items = str_split(s, delim, &items);
    
    if (num_items == -1) {
        printf("Sorry, str_split failed.");
        return EXIT_FAILURE;
    }
    
    printf("Original: %s\n", s);
    printf("Split items: \n");
    for (i = 0; i < num_items; i++)
        printf("%d: %s\n", i, items[i]);
    
    printf("Now, what does str_join() have to say about items?\n");
    tmp = str_join(items, 0, num_items, " ");
    if (tmp == NULL) {
        printf("str_join() failed.");
        free(items);
        return EXIT_FAILURE;
    }
    printf("str_join() says: %s\n", tmp);
    printf("The end. :) \n");
    
    free(tmp);
    free(items);
    
    return EXIT_SUCCESS;
}