scanf being ignored after '^d' is hit

Question

I'm new to C and currently doing homework that happens to deal with scanf()

The second scanf()is being ignored after I hit Ctrl+d twice to exist the first scanf() and I can't figure out why does that happen. In the debugger, I can see that the program skips the second scanf(). Is it because something like, Ctrl+d ends the input buffer so the second scanf() does not get a chance to read anything from the input. I am not professional at using technical terms so my description might be kinda vague.

Thanks for any help in advance.

int main(int argc, const char * argv[]) {
    NODE *list = NULL;
    while (1) {
        char *word = malloc(101);
        if (scanf("%s", word) == EOF) {
            break;
        }
        push(word, &list);
        //free(word);
    }
    int index[3];
    for (int i = 0; i < 3; i++) {
        scanf("%d", &index[0]);
    }
    pop(index[0], &list);
    pop(index[1], &list);
    pop(index[2], &list);
    printList(list);
    free(list);
    return 0;
}

You mean Ctrl-D? That means “close this input stream” so there’s nothing to read after that, ever. — Sami Kuhmonen, Dec 04 '20 at 08:09
@SamiKuhmonen oops, you're right it was ctrl+d, how do I go around it? — Zhihan L, Dec 04 '20 at 08:12
I suggest `clearerr(stdin)`. Please see [How to restart stdin after Ctrl+D?](https://stackoverflow.com/questions/51194821/how-to-restart-stdin-after-ctrld/51195895) — Weather Vane, Dec 04 '20 at 08:13
Use the [`clearerr`](https://en.cppreference.com/w/c/io/clearerr) function. — Some programmer dude, Dec 04 '20 at 08:14
Best way would to not close the stream with ^D since it most likely isn’t necessary — Sami Kuhmonen, Dec 04 '20 at 08:15
If you use `fgets()` for (all) the input (and remove the trailing newline) you can use a blank line as the signal to stop input. — Weather Vane, Dec 04 '20 at 08:17
You could also ask the user to input a special string to mark the end of the first input. For example an empty string. — Some programmer dude, Dec 04 '20 at 08:17

scanf being ignored after '^d' is hit

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