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Design a program to input a date from user in the form
day/month/year (e.g. 2/6/2000) and report whether it’s a
valid date or not. The program should take account of leap
years. You will need to know that a leap year is a year that
is exactly divisible by 4, except that century years are
only leap years if they are divisible by 400.
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Answer / jkl
Design pattern is a general repeatable solution to a
commonly occurring problem . A design pattern is not a
finished design that can be transformed directly into code.
It is a description or template for how to solve a problem
that can be used in many different situations.
Object-oriented design patterns typically show
relationships and interactions between classes or objects,
without specifying the final application classes or objects
that are involved.
Design patterns deal specifically with problems at the
level of software design.
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