def greet(name):
    message = "hola " + name

    print(message + "?")
    print(message + "!")

prompt = "dime tu nombre: "
name = raw_input(prompt)
greet(name)

a = 5.0
b = 3.0
print (a + b)

a = "5"
b = "3"
print (a + b) 

a = 5
b = 3.0
print (a + b)

