#include <stdio.h>

double r = 3.14;

int main( int argc, char* argv[] )
{
   printf( "r = %lf\n", r );    /* Uses "double r" */
   printf( "r = %u\n", &r );    /* Address of r */

   /* ==============================
      Shadows the global variable r
      ============================== */
   int r = 8888;

   printf( "r = %d\n", r );     /* Uses "int r" */
   printf( "r = %u\n", &r );    /* Address of r */
}