Define a structure named StockItem with two string fields, supplier and productName and one int field, catalogNumber. Then define a structure named Customer with string (i.e., char *) fields name, streetAddress, city, postalCode, phone. Assume that structures named Date and Money have already been defined (representing a date and a monetary amount respectively. Finally, define a structure named Purchase that has these fields: buyer of type Customer, itemSold of type StockItem, dateOfSale of type Date, paid of type Money, returnable of type int (i.e., a boolean). SUBMIT 4 of 4: Tue Jun 22 2021 12:19:04 GMT+0300 (GMT+03:00)