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Author(s) Hugo Siberdt Anthony Doeraene
Deadline No deadline
Submission limit No limitation

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Consumer

In this exercice, you'll have to implement a function to add a product to the consumer'shopping cart.

You'll have to use the following structures:

typedef struct
{
    unsigned int price;
    char * name;
} stuff_t;

typedef struct
{
    stuff_t ** bag;
    char * name;
    unsigned int bagSize;
    unsigned int total;
    unsigned int budget;
    char** dontLike;
    unsigned int size;
} consumer_t;

The client has by default a bag (bag) of size bagsize filled with empty items (stuff_t) (represented by NULL). The bag acts as a stack, thus items added to the bag should be put just after the last item bought. The variable dontLike is an array of size size containing char* representing the name of items that the consumer doesn't like.

We ask you to write a function called AddStuff.

Examples of use:

Let's suppose a consumer called Maximus, with a bag of size 10 and a budget of 5000, moreover this consumer doesn't like "salad" nor "fish" (dontLike = ["salad", "fish"]).

  • AddStuff(client, "teddy bear", 10); add to Maximus' bag the "teddy bear" item. There is thus 1 "teddy bear" and 9 empty items in his bag, with a total cost of 10.
  • AddStuff(client, "salade", 5); add nothing to Maximus' bag beacuse he doesn't like salad. There is thus 1 "teddy bear" and 9 empty items in his bag, with a total cost of 10.
  • AddStuff(client, "TV", 200); add to Maximus' bag the "TV" item. There is thus 1 "teddy bear", 1 "TV" and 8 empty items in his bag, with a total cost of 210.
Question 1: Add stuff 
/**
*
* Add an item to the consumer's bag
*
* Sif the total cost of items in a consumer's bag exceeds his budget, he won't be able to buy the items, thus nothing is added to the bag
* If the client doesn't like the product, he won't buy it and nothing is added to is bag
* If his bag is full (no more empty items), the consumer won't be able to buy it and nothing is done
*
* If the consumer's bag is empty (total = 0), you must initialize it before adding the item to it
*
* @param client: the consumer which will add an item to his bag
* @param name: a string representing the name of the bought item
* @param price: the price of the item (price >= 0)
* @return:  0 if no error
*          -1 if client == NULL or if name == NULL
*          -2 if price > budget
*          -3 if name contained in client->dontLike
*          -4 if malloc fails
*          -5 if client->bag is full of if bagSize == 0
*/
void AddStuff(consumer_t* client, char* name, unsigned int price);
Question 2: Méthodes auxiliaires

Write your auxiliary functions here