472:/lib/trade.c (/lib/trade.c)
(void) want_to_pay(int *arr, string str)
/*
 * Function name: want_to_pay
 * Description:   Check the string and sort out what types of coins to pay with
 *                or better to work with
 * Arguments:     arr - the array holding the coins
 *                str - string describing the coins object wants to work with
 */
