The relational expression ==

We haven't covered relational and logical expressions in detail yet.  That is the topic for a future lesson.

For now, just accept the fact that the following expression will return true if A is equal to B, and will return false otherwise:

A == B

If the input is even, the code in the selection structure in Listing 4 displays a message indicating that the input was even.

If the input is odd, the code in the selection structure displays a message indicating that the input was odd.

The code in Listing 4 produces the fourth line of output shown under program output earlier.