HELP!

[nicholashowhow]

International Book Fair which was held for 30 days attracted many visitors. Only those visitors with passes were allowed to enter. Number of passes issued for each day was recorded. You need to write a C++ program that analyzes the success of the book fair based on the following:
(a) calculates the total visitors who went to the book fair.
(b) calculates the average number of visitors.
(c) calculates the number of days which has the number of visitors more than 50.

[Paoletti301]

what do you actually need help with