Question

Writing a Modular Program in Python
In this lab, you add the input and output statements to a partially completed Python program. When completed, the user should be able to enter a year, a month, and a day. The program then determines if the date is valid. Valid years are those that are greater than 0, valid months include the values 1 through 12, and valid days include the values 1 through 31.

Instructions

1. Notice that variables have been declared for you.
2. Write input statements to retrieve a year, a month, and a day from the user.
3. Include the print statements to output the following:

   month/day/year is a valid date.

   or

   month/day/year is an invalid date. 

4. Execute the program entering the following input:

   month = 5, day = 32 year = 2014

5. Execute the program entering the following input:

   month = 9 day = 21 year = 2002
   

Answer 1

Python 3 code

============================================================================================

year=int(input('Enter year: '))
month=int(input('Enter month: '))
day=int(input('Enter day: '))

f=1

if(year<=0):
f=0
elif(month<1 or month>12):
f=0
elif(day<1 or day>31):
f=0

if f==1:
print(month,'/',day,'/',year,' is a valid date.')
else:
print(month,'/',day,'/',year,' is an invalid date.')

============================================================================================

Output