#include<stdio.h>
int main() {
char arr[10];
printf("Enter your name: \n");
fgets(arr, sizeof(arr), stdin);
puts(arr);
return 0;
}
I have a char arr[10] and use fgets(arr, sizeof(arr), stdin) to receive input. If I input say 20 characters, 9 chars will be written to arr[10] along with the null terminator added. But what happens to the remaining chars in the buffer? Do they get automatically flushed/cleared or are they left in the buffer forever? i.e. Can extra chars that are outside the bounds check cause a problem?
But what happens to the remaining chars in the buffer?
They remain in stdin for the next read function.
Do they get automatically flushed/cleared or are they left in the buffer forever?
Left in stdin until read or program ends.
Can extra chars that are outside the bounds check cause a problem?
Not directly. It depends on how your program copes will failing to read the excess input.