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

// This example illustrates "pass-by-address", a pattern in which you pass the address
// of a variable in the caller's (main(…)'s stack frame) so that the callee (make_5(…))
// can modify it.  The norm is "pass-by-value" which copies the value to the callee's
// stack frame.
//
// This may be useful for smintf(…), especially for those doing the bonus.  While not
// necessary, you may find it easiest to pass the address of a counter and have the
// callee increment it.  This is all we will say about that.  For the rest, you will
// need to use your problem-solving skills.

void make_5(int* a_n) {
    *a_n = 5;  // write 5 at address a_n
    // <<<<<<<<<<<<<<<<<< memory form as of HERE <<<<<<<<<<<<<<<
}

int main(int argc, char* argv[]) {
    int n = 2;

    log_int(n);  // n == 2
    make_5(&n);  // Pass by address
    log_int(n);  // n == 5
    return EXIT_SUCCESS;
}
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