Assigment of adress to pointer doesn't work

#define NUM_STRINGS 10
#define STR_LEN 10
int main (void) {
    char words[NUM_STRINGS][STR_LEN];
    char input[STR_LEN];
    char *words_ptr[NUM_STRINGS];
    char *temp;
    int i, j;
    int count = 0;
    for (i = 0; i < NUM_STRINGS; ++i) {
        printf("Enter a word (or 0 to quit): ");
        scanf ("%9s", input);
        discard_input();
        if (input[0] == '0') break;
        strncpy(words[i], input, STR_LEN);
        words_ptr[i] = &words[i];  //mistake
        ++count;
    }