#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>

int main(int argc, char* argv[]) {
    int    n = 5;
    int* a_n = &n;    // ⇒ a_n is the address of an int, and is initialized to the address of n.
                      // Aside:  “initialize” means the first time a value is assigned to a variable.
    
    /*
    (gdb) whatis a_n
    type = int *

    (gdb) whatis a_n
    type = int *

    (gdb) whatis &a_n
    type = int **

    (gdb) whatis &(&n)
    Attempt to take address of value not located in memory.

    # TRANSLATION: &n is an expression.  The result of an expression does not live on the stack.
    # The stack contains only variables that have names.

    */

    return EXIT_SUCCESS;
}
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