While loop and cin char, int

Question

I'm just trying to figure out this:

I have following code:

#include <iostream>
using namespace std;

int main() {
  int n, x = 0;
  cin >> n;
  char s[3];

  while (n-- > 0) {
    cout << n << endl;
    // cin >> s;
  }

  return 0;
}

If I fill n with 2, everything works fine ( 1 and 0 get printed), but if I uncomment the cin >> s; line, only first iteration ( 1 ) will be performed (and the input gets saved into s ).

Now my question: why is working like that? And how can I fix it? Thanks in advance.

Answer 1

Aside from the useless declaration of variable x , I think there's nothing wrong with your code.

If n is filled with 2 the result is always 1 and 0 get printed, regardless the cin >> s; is uncommented or not.