#include <stdio.h>

main ()

{
   int a = 5, b = -3, c = -7;


   printf ("%d  %d  %d\n", a, b, c);        /* 5  -3  -7 */

   {
      int   b = 8;
      float c = 9.9;

      printf ("%d  %d  %.1f\n", a, b, c);   /* 5  8  9.9 */

      a = b;

      {
         int c;

         c = b;

         printf ("%d  %d  %d\n", a, b, c);  /* 8  8  8 */
      }

      printf ("%d  %d  %.1f\n", a, b, c);   /* 8  8  9.9 */
   }

   printf ("%d  %d  %d\n", a, b, c);        /* 8  -3  -7 */
}