#include <stdio.h>

int itsGlobal = 0;      /* This variable is global */

main()
{
  int itsLocal = 1;     /* This variable is local to main */
  
  printf("Global %d Local %d\n", itsGlobal, itsLocal);
  
  {
    int itsLocal = 2;   /* This is local to this sub-block */
    
    printf("Global %d Local %d\n", itsGlobal, itsLocal);
  }
  
  printf("Global %d Local %d\n", itsGlobal, itsLocal);
}