How `scanf` reads input.

scanf-1.c

#include <stdio.h>
int main(void) {
  int count = 0;

  while(1) {
    printf("count: %d\n", count++);

    int i;
    int n = scanf("%d",&i);
    if (n != 1) {
      printf("scanf cannot read anything\n");
      return 0;
    }
    printf("%d\n",i);
  }
  return 0;
}

Run this program and write 2.3 for it. Can you guess the output?