#include <stdio.h>

int main(void) {
   // what are these things?
   int *a;
   int *b[3];
   int (*c)[7];

   /* recall that:
    *    sizeof(int) = 4
    *    sizeof(void *) = 8
    * what about these?
    */
   printf("      sizeof(a) = %li\n", sizeof(a));
   printf("     sizeof(*a) = %li\n", sizeof(*a));
   printf("      sizeof(b) = %li\n", sizeof(b));
   printf("   sizeof(b[0]) = %li\n", sizeof(b[0]));
   printf("  sizeof(*b[0]) = %li\n", sizeof(*b[0]));
   printf("      sizeof(c) = %li\n", sizeof(c));
   printf("     sizeof(*c) = %li\n", sizeof(*c));
   printf("sizeof((*c)[0]) = %li\n", sizeof((*c)[0]));

   return 0;
}