Please Help in C++;

Use currPurchase's ReadDetails() to read each pair of inputs, string food and integer quantity, until "finish" is read from input and currPurchase's ReadDetails() returns false. If currPurchase's ReadDetails() returns true, append currPurchase to vector purchaseList. Ex: If the input is quail 27 okra 9 truffle 7 zucchini 21 cake 24 finish, then the output is: Purchase: quail, Quantity: 27 Purchase: okra, Quantity: 9 Purchase: truffle, Quantity: 7 Purchase: zucchini, Quantity: 21 Purchase: cake, Quantity: 24