char *scut_last_word(char s[]) {
    int spaces, i = 0;
    char *sptr = s;
    while (*sptr != '\0') {
        if (*sptr == ' ') {
            spaces++;
        }
        sptr++;
    }

    sptr = s; //reset a s[0]

    while (*sptr != '\0') {

        if (*sptr == ' ') {
            i++;
        }
        if (i == spaces) {
            *sptr = '\0';
        }
        sptr++;
    }

    return s;
}