ANSI C: Variable Shadowing

gistfile1.c

#include <stdio.h>

int main()
{
  int i = 1;
  printf("%d\n", i); //=> 1
  {
    printf("%d\n", i); //=> 1
    int i = 2;
    printf("%d\n", i); //=> 2
  }
  printf("%d\n", i); //=> 1
  return 0;
}