ifelse.rb

if (5==5) && (1!=2)
  puts "You are wonderful"
else
  3.times do
  puts "You Suck!"
  end
end

switch.rb

def choose
  puts "Do you like programming? Yes, no, or maybe please."
  choice = gets.chomp
  case choice.downcase
  when "yes"
    puts "That\'s great!"
  when "no"
    puts "That\'s too bad!"
  when "maybe"
    puts "Glad you are giving it a chance!"
  else
    puts "I have no idea what that means."
  end
end
choose

while.rb

number = 0
while (number <= 10) do
  puts "this time the number is " + number
  number+=1
end