kennyt

def echo (word)
	word
end

def shout (word)
	word.upcase
end 

def repeat (word, times = 2)
	(word * times).gsub(word, " #{word}").strip

kennyt

def add (num1, num2)
	num1 + num2
end

def subtract (num1, num2)
	num1 - num2
end

def sum (array)
	answer = 0

kennyt

def ftoc (fahrenheit)
	(fahrenheit - 32) * 5/9.to_f
end

def ctof (celsius)
	celsius * 9/5.to_f + 32
end

kennyt

def hello
	"Hello!"
end

def greet(name)

	"Hello, #{name}!"
end