Write a program named CheckMonth that prompts a user to enter a birth month. If the value entered is greater than 12 or less than 1, display the error message Invalid month; otherwise, display the valid month with a message such as 3 is a valid month.

month=['January', 'Februrary', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'] #list which stores the name of the month.

CheckMonth= int(input("Enter the number of the month")) #it is used to take the inputs from the user.

if CheckMonth>=1 and CheckMonth<=12: #check the condition for valid month.

print(str(CheckMonth)+" is a valid month which name is: "+ str (month [CheckMonth-1])) #print the name of month which is enter by the user.

else:

print(str(CheckMonth)+" is not a valid month, please enter the valid month") # print for the invalid month.

Output:

If the user inputs 1, it will prints "1 is a valid month which name is: January".
If the user inputs is 0, then it will prints "0 is not a valid month, please enter the valid month"

Explanation:

The above program is in python language, in which the first line of the code is used to hold the list of the month.
Then the second line is used to render a message for the user input, take the input from the user and save it into a variable.
Then that value is checked by the if-condition that it lies in between 1 to 12 or not.
If it lies, then print the valid month otherwise it prints that the month is invalid.