#include <stdio.h>

int main( int argc, char* argv[] )
{  
   /* Outer scope */

   double r = 3.14;                        /* (1) */

   printf( "1. r = %lf\n", r );               /* Access r(1) */

   { /* Inner scope (a new scope !) */


      printf( "2. r = %lf\n", r );            /* Access r(1) */


      int r = 4;                    /* (2) */

      printf( "3. r = %d\n", r );            /* Access r(2) */
   }

   printf( "4. r = %lf\n", r );               /* Access r(1) */

}