QUESTION 1 The table below shows the AZA Travel Tour ticketing price: Package Package Code Istanbul Beijing Tokyo Y Price per Person (RM) Adult Child 4000.00 2100.00 2300.00 1400.00 3800.00 1800.00 z Write a complete C++ program using sentinel repetition structure to do the following: a) Read the package code and check for the validity of the package code. Display an error message if it is not valid. Then, read the number of adults and children. b) Calculate and display the price for each customer. c) Count and display the total number of adult and the total number of child. d) Calculate and display the total price of ticket sold