#include <stdio.h>

int main(int argc, char* argv[] )
{
   unsigned long i = 4;  // Integer
	       // i is a number that you can add, subtract, etc
   int a[5];   // Array of integers
	       // a is the LOCATION (address) of the first elem of the array

   printf("a = %p\n", a);
   printf("i = %lx\n", i);

   i = a;      // WARNING !! Types are "too different" !!!
	       // BUT: it will still compile and run 
               // Note: a "warning" is NOT fatal !!!

   printf("i = 0x%lx\n", i);

}