I am learning about black box testing and I am not to sure what kind of tests can be done with these functions

Black Box Testing Read each of the following function descriptions and create black box test data to test each of the functions. This will be data that tests the functionality of the individual functions by performing unit tests on the functions. You should not refer to the code at this stage - that will come later when you create white box test data. You can report your results in a format similar to this: These functions are part of a simple shopping cart application where the user is asked to select items to add to their cart by item name. The program maintains a list of item names for sale and checks the names entered against the list available for sale. If it finds a match, it adds the item into the shopping cart. The shopping cart is a structure which keeps a list of the items in the cart and the number of items in the cart. Items are indicated by their position in the name array. There is a parallel arral of prices so that once the index of the item in the item name array is known, the index can be used to find the associated price. At the end of the program, an itemized list of the cart contents and prices is shown with a total with taxes calculated. This is a list of the functions you need to create black box test data for: This is a list of the functions you need to create black box test data for: /* * Find the position of a string in an array of strings. * @param str - the string to find * @param list - the list of strings to search * @param nstrings - the number of strings in the list * @returns the position of the string in the list or - 1 if not found */ int findString(const char str[], const char list[][MAX_STRING_LEN +1 ], const int nstrings); */ int findString(const char str[], const char list[][MAX_STRING_LEN + 1], const int nstrings); /* * Initialize all members of an array to a single value. * @param ar - the array to initialize * @param value - the value to set all array members to * @param size - the size of the array */ void init(int ar[], const int value, const int size); /* * Add an item to the shopping cart. * @param cart - the cart to add to * @param item - the item to add * @returns zero on success or non-zero if an error occurs */ int add2Cart(struct cart* cart, const int item); /* * Clear input buffer until next newline character. */ void clear(); White Box Testing Now, you should consult the code supplied with this workshop. Examine the code for each of the functions and add white box tests to the black box tests you created previously. Be sure to indicate if it is a white box or black box test as shown in the example. You can add the white box tests as additional rows to the table you created for each function