Question

anyString.substr(x, n) - Returns a copy of a substring. The substring is n characters long and begins at position x of anyString.

Write a program that reads a string from the user containing a date in the format mm/dd/yyyy. You have to use above substring method to extract the various fields from the format. It should print the date in the form Month Date, Year.

Validate:  Exit the program with error message as “Invalid date format” if length of the format is not satisfied  Exit the program with error message as “Invalid month” if mm is not within the desired range.

Examples:

a) 03/12/2012 => March 12, 2012

b) 10/04/2016 => October 4, 2016

c) 5/3/2010 => Invalid date format

d) 13/21/1990 => Invalid month

Note: In the input string having mm and dd, the first 0 (if any in m or d) has to be ignored. 

In example

a), 03 in mm is interpreted as March in output. (Hint: Create array of Month names where index corresponds to month number) 

In example b), 04 in dd is interpreted as 4 in the output. (Hint: Tackle such cases where first d is 0)