Splitting a string into tokens in C

#include 
#include 
#include 

#define MAX_LINE_LEN 256
#define NULL_TERM '\0'

/* A function that will print the content of the token_list */
int printcharlist(char **tok_list)
{
    char **pptr = tok_list;

    while (*pptr) {
        printf ("++ %s\n", *pptr);
        pptr++;
    }

    return 0;
}

/* returns the string between 2 pointers (not forgetting to append NULL_TERM */
char *getStr(char *start, char *end)
{
    int length=end-start;
    int i=0;
    char *result = (char *)malloc (sizeof (char) * (length+1));

    while (i < length) {
    result[i] = *start;
    start++;
    i++;
    }

    result[i] = NULL_TERM;

    return result;
}