marks_Calc .rb

# an empty array to store the grades
grades = []

# variables for the passing grade and the total number of subjects. You can change them from here.
pass_grade = 50
subjects = 7

# loops until reaches the the number of subjects on the subjects variable
  while grades.count < subjects
    # prints the message
    puts "Please enter a grade:"
    # takes the input and assign it to grade varible and then adds it to grades array
    grade = gets.to_i
    grades << grade
  end

# prints the saved grades for confirmation.
puts "Your grades are: #{grades}"

# sums all the of the saved grades in grades array into total varible
  total = grades.inject(:+)

# prints the total grades from the total varible
puts "Your total grades is #{total}"

# divides the total to the number of subjects to get the average and assign it to sum varible
sum = total / subjects

# compares the sum with the pass_grade and prints the results as message.
if sum >= pass_grade || sum == pass_grade
  puts "You failed!"
else
  puts "You passed."
end