How do I change my unix so that to run a.out by typing "a.out" instead of "./a.out"?

Question

In other words, how do I remove the need to put "./" infront of my file execution commands for unix?

what is the exact command to do this?

Answer 1

include . in your path

Answer 2

I think what you want is chmod

You need to "change mode" the file to an executable. Generally I tend to rename a.out to something else first but you could do it as a
chmod +x a.out

You could include it in your compile command. Either at the end of the script, or by adding it at the end of your command line.