language- C++

Information may be represented in a variety of different formats. For instance, 2:00 pm can be represented in military time as 1400. The most common way we see dates represented in the United States is Month Day, Year (February 15, 2019 or 2/15/2019). Military dates are typically represented as DD MM YYYY (15 02 2019).

Another date representation is the Hungarian order, also represented in the standard ISO 8601, which is in the form YYYY-MM-DD. This format can be more easily used computationally.

For this project, the user will enter one, single integer that represents a date in the ISO 8601 format. Your input should be in the form YYYYMMDD (no dashes/no spaces/year 1000 or later, maximum year 9999). From the integer in this form, your program will output the date in the format we are familiar with in the United States, MM/DD/YYYY. In your output, you may also omit leading 0s (example for February 15, 2019, you may represent it as 2/15/2019, instead of 02/15/2019).

Examples:

If 20191216 is entered, 12/16/2019 would be the appropriate output.

If 17010301 is entered, 3/1/1701 would be the appropriate output.

In addition to pulling out the month, day, and year, you will need to validate the following prior to output:

1. An 8-digit number is entered

Invalid input should result in an invalid length message

2. The month is a valid month [1..12]

Invalid input should result in an invalid month message

3. The day is valid [1..31]

Invalid input should result in an invalid day message

Note: For any given input, if the input is valid (based upon the 3 constraints given), output the date in the required format. If the input is invalid, only print the appropriate invalid message (no date).

In your Test Plan, you must include the 2 sample test cases from above, at least 2 more valid samples, at least 2 invalid length samples, at least 2 invalid month samples, and at least 2 invalid day samples.