Befunge 98, 4 bytes

&2%.

Try it Online! (It may take a while because of how it ends)

&       Take input
 2%     Mod 2
   .    Print
&       The IP wraps around and hits the "take input" again. Because of the
        way TIO's '98 handles & on EOF, this ends the program after a minute.

This answer is very similar to Befunge 93, but doesn't need the @ to end.