gan,ane kan punya code seperti ini

def add(a, b)

 puts "ADDING #{a} + #{b}"

 a + b

end



def subtract(a, b)

 puts "SUBTRACTING #{a} - #{b}"

 a - b

end



def multiply(a, b)

 puts "MULTIPLYING #{a} * #{b}"

 a * b

end



def divide(a, b)

 puts "DIVIDING #{a} / #{b}"

 a / b

end



puts "Let's do some math with just functions!"



age = add(30, 5)

height = subtract(78,4)

weight = multiply(90, 2)

iq = divide(100, 2)



puts "Age: #{age}, Height: #{height}, Weight: #{weight}, IQ: #{iq}"



# A puzzle for the extra credit, type it in anyway.

puts "Here is a puzzle."



what = add(age, subtract(height, multiply(weight, divide(iq, 2))))



puts "That becomes: #{what} Can you do it by hand?"

pas saya assign functionnya, kok malah keluar output ?
padahal saya niatnya cuma mau assign value dari function tersebut
mohon bantuannya