def say_hello():
    print("Hello")


say_hello()

print(100 * '-')


def say_my_name(name):
    print(f"my name is {name}")


say_my_name('umidjon')
print(100 * '-')


def square(x):
    sq = x * x
    return sq


print(square(12))
print(100 * '-')

age = input("How old are you?")
print(age)
print(100 * '-')
