using logic in ruby

fis-rubylogic-alex-au

#Assignment.rb
#https://gist.github.com/aviflombaum/fd375100f4410dbbf184

# Write an expression that returns true by using ==
8*8 ==64

# Write an expression that returns false using ==
rand(10) == 11

# Write an expression that returns true using != Write an expression that returns false using !=
1 != 2  #true
1 != 1  #false

# Write an if statement with 3 different branches use != in the first branch, == in the second, and > in the third

age = rand(78)

if age != 25
  puts "We are not the same age!"
elsif age == 25
  puts "We are the same age!"
elsif age > 25
  puts "You are older than me."
end


# Assign a variable based on the result of an if statement

x = 25 if rand(10) > 5

# Execute code based on the result of an if statement. conditionally run puts "Hello Class" if 1 < 2

if 1 < 2
  puts "Hello Class"
end

# Try using an if statement at the end of an expression

hilarious = if 100*1 > 99 then 'true' end

# Write an if statement that negates the or operator to return true 
#Write an if statement that uses the and operator to create a false return

if !(false||false)
  puts "I negated the or operator, but returned true."
end

if 8 > 9 and 9 > 8
  puts "unbelievable!"
else
  puts "impossible!"
end

# Write a Case Statement that checks if a variable is a vowel 
#Rewrite that same case statement as an if statement 
#Write a Case statement that has at 4 branches and a default return

var = gets.chomp
case var
when "a" , "e" , "i" , "o" , "u"
  puts "#{var} a vowel!"
else
  puts "#{var} is not a vowel"
end

if var == "a" || if var == "e" || if var == "i" || if var == "o" || if var == "u"
  puts "#{var} a vowel!"
else
  puts "#{var} not a vowel!"
end
end
end
end
end


# Write a while loop that runs exactly 5 times
count = 5
while count > 0
  puts "#{count}"
  count -= 1
end



#Write a while loop that counts from 1 to 10 and puts all odd numbers you can check 
#if a number is odd by calling the odd? method on it.

count = 1
while count <= 10
  puts "#{count}" if count.odd?
  count += 1
end