The sales data of a company's sales is stored in a file Txt that obeys the following format: branch(Filial), year_month, sales_count, total_dend.

[danilobros]

Dear,
I'm new in programming and need of help for resolve the problem.

The sales data of a company's sales is stored in a file Txt that obeys the following format: branch(Filial), year_month, sales_count, total_dend.

Make a program that loads the data from the file into data structures and allows

Answer expressions such as:

1. total sales of subsidiaries with codes between 10 and 20

2. total sales of subsidiaries with codes between 10 and 20 in the months of Jan / 17 to Jun / 17

3. total sales of all branches(Filial) in the months of Aug / 17 to Oct / 17

Someone can help? Please.