#함수 정의
def my_func(a, b):
    c = 2 * (a + b)
    return c
#함수 호출
my_func(1, 2)

#매개변수 O, return O
def add(a, b):
    c = a + b
    return c

print(add(5, 3))

#매개변수 O, return X
def minus(a, b):
    c = a - b
    print(c)

minus(6, 2)

#매개변수 X, return O
def cal():
    a = 100 * 7 - 456
    return a

print(cal())

#매개변수 X, return X
def hello():
    print("안녕하세요.")

hello()

def func():
    for i in range(1, 11):
        if i % 2 == 0:
            print(i + 3)
        else:
            print(i)
func()