power-girl0-0

def a_rectangleArea(): print(5*7) def b_rectagleArea(x, y): print(x * y) def c_rectagleArea(): return (5*7) def d_rectagleArea(x, y): return ( x*y ) a_rectangleArea() b_rectagleArea(5,7) print(c_rectagleArea()) print(d_rectagleArea(5,7)) * a_rectagleArea와 b_rectagleArea는 return값이 없으므로 print함수에 넣으면 null을 출력한다.