Question

In ruby Write a program that prompts the user to enter a year and first day of the year, and displays the calendar table of that year. For example, if the user entered the year 2019, and 2 for Tuesday, January 1, 2019, your program should display the calendar for each month in the year 2019.

Answer 1

Firstly let us get the input by using the below modules.

require 'date'
puts "Enter the year"
iyear = gets
puts "Enter the day"
iday = gets

Now let's pass the input values and build the program. I recommend you to use Visual Studio Code IDE to build the solution. Please import the required modules and debug the code.

Replace the date input from the input commands above. This can be customized based on your output.

require 'date'

date = Date.new(2019, 1, 1)

daysOfWeek = Date::ABBR_DAYNAMES.map { |x| " #{x}"}
monthName = Date::MONTHNAMES[date.month]

yearMonthStr = "#{date.year} - #{monthName}"

cellLength = daysOfWeek.first.length
lineLength = cellLength * daysOfWeek.length
padding = lineLength / 2 - yearMonthStr.length / 2

puts yearMonthStr.rjust(yearMonthStr.length + padding, ' ')
puts daysOfWeek.join("")

currWeekDay = date.wday
currMonth = date.month

prevPadding = "".ljust( currWeekDay * cellLength, ' ')

while date.month == currMonth

while currWeekDay < daysOfWeek.length and date.month == currMonth

dayStr = date.day.to_s.rjust(cellLength, ' ')
cell = "#{prevPadding}#{dayStr}"

prevPadding = ""
print cell

date = date + 1

end

currWeekDay = 0
puts

end

Please let me know if you need any clarifications.Happy Learning!