Write a function 'problem1_5(age)'. This function should use if-elif-else statement to print out "Have a glass of milk." for anyone under 7; "Have a coke." for anyone under 21, and "Have a martini." for anyone 21 or older.

 def problem1_5(age): 

if age<7:

        print("Have a glass of milk.")

    elif age<21:

        print("Have a coke.")

    else:

        print("Have a martini.")

problem1_5(21) #enter any age at 21