first_name = "Hans"
last_name = "Hansen"
salary = 40000
age = 30


def get_name():
    return first_name + " " + last_name

print(get_name())


def set_last_name(name):
    global last_name
    last_name = name

set_last_name("Jensen")


def birthday():
    global age
    age += 1
    print("Tillykke med de " + str(age) + " år")

birthday()
birthday()


def raise_salary(i):
    global salary
    if i > 0:
        salary += i
    else:
        print("Der er sket en fejl")

raise_salary(5000)
print(salary)