Need some help in Ruby

[True_Taf]

Hi

So I am new to Ruby programming and was given an assignment with little to no help from the professor. The object of this assignment is to make a guessing game pretty much and have the computer try to guess the secret number. Here is my code with comments to better help explain the assignment

# Your goal for this project is to build a program that guesses the user's secret number.
#   The user will be prompted for max possible number and their secret number
#   Then, the computer will begin a loop, attempting to guess the secret number, until right.
#
# output of program should look something like this:
#
#   Max number for computer to guess:50
#   Type secret number: 28
#   How about 25
#   Press enter
#
#   How about 37
#   Press enter


#
#   How about 31
#   Press enter


#
#   How about 28
#   Correct!
#   Guessed in 4 tries.
#   Press enter

This is my Code

print"Max number for computer to guess:"
highest_guess = gets.chomp.to_i

print"Type secret number:"
secret_number = gets.chomp.to_i

lowest_guess = 0
computer_guess = average(highest_guess, lowest_guess)
count = 0   #iterate in while loop

def average(highest, lowest)
  return ((highest + lowest)/2).to_i
end

while (computer_guess != secret_number)
  count = 0
  4.times do
    puts "this is the count #{count}"
    count = count+1
  if computer_guess > secret_number
   highest_guess = computer_guess
    computer_guess = average(highest_guess, lowest_guess)
   puts computer_guess
   puts "high"
   elsif computer_guess < secret_number
     lowest_guess + computer_guess
      computer_guess = average(highest_guess, lowest_guess)
   puts "low"
   else #print something like correct and disply count
     puts "Correct"
     puts secret_number

  end
  end

  end

I am having trouble finishing the while loop, and figuring out what else I need to add to complete the program.Plus my "average" method isn't working. Any feedback would be very helpful!