The pre$-$ and post$-$increment operators are similar to the add operations, but, as unary operators, each of them adds a single minute to the time stored in the calling object. Recall that the difference between pre$-$ and post$-$increment operators is essentially that the pre$-$increment operator changes the calling object and then returns a reference to it$,$ while the post$-$increment operator copies the calling object and returns its original value after changing the original object.

Hints

Suggested order

I$\text{'}$d suggest writing these operators in the following order:

Output operator $(<<)$: Testing every other operator is easier when you can print the result, and it's easy to declare and initialize Time objects

Input operator $(>>)$: This operator is only used in the first two test cases$--$we don't combine input tests with any other operator tests$--$but moving on to this one is a logical extension of the output operator.

Comparison operators $(==,!=,<,>)$: All of these operators are similar, and checking how two Times compare to one another is relatively straightforward.

Arithmetic operators $(+,-,+=,-=)$: Understanding how to correctly add and subtract Time objects is the hardest part of this assignment, in my opinion. There are a couple of special cases to account for, as described below. I recommend handling the simple $+$ and $-$ operators before the augmented assignments $+=$ and $-=.$

Increment operators $(++)$: The increment operators are definitely simpler than the add and subtract operators, but you have to understand addition to write these correctly.