Revert "Revert "rm a.out""

This reverts commit 72a34b3ec4d6e93c31d450e0d94d4909e2868782.
Revert "Revert "Revert "rm a.out"""

This reverts commit a6759c750d8c1abc34e4d0943db558d191175666.
rm a.out Makefile