#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;  // Declare a variable 'a_n' of type int* ('address of int') and
                    // initialize it to &n ('address of n').
    
    printf("Value of n is %d.\n", n);
    printf("Address of n is %p.\n", (void*)a_n);
    printf("Value at a_n is %d.\n", *a_n);  // Print *a_n ('value at a_n').

    a_n = 888;    // Set a_n to 888.
    // GCC: assignment to ‘int *’ from ‘int’ makes ADDRESS from integer without a cast
    
    //*a_n = 888; // Store 888 at address a_n.  ("Write…" would also be okay.)
    printf("Value at a_n is %d.\n", *a_n);  // Print *a_n ('value at a_n').
    printf("Value of n is %d.\n", n);


    // YOU MUST LEARN THE TERMINOLOGY THAT WE USE IN THE CLASS.

    // You can find a reference for that terminology on the reference sheet (p.2, middle).
    
    return EXIT_SUCCESS;
}
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