do while loop does only execute scanf_s(" %d", &variable); once

Question

When running into the do while loop my I'm only asked for input once and run into an endless loop afterwards. Does someone know why?

do {
        printf("Insert the year published: \n");
        scanf_s(" %d", &yearPublished);
        if (1 < yearPublished && yearPublished <= currentYear) {
            newMovie->yearPublished = yearPublished;
            wrongInput = false;
            printf("Correct input"); //DEBUG
        } else {
            printf("Please enter a valid integer number!\n");
            wrongInput = true;
        }
} while(wrongInput);

Answer 1

I just found a solution for the problem which is caused from not clearing the input buffer:

with adding the following at the end of the while loop this can be fixed

// Clear the input buffer
int ch;
while ((ch = getchar()) != '\n' && ch != EOF);