change code.c to main.c

main.c is the std for the main function so i changed the filename
change code.c to main.c

main.c is the std for the main function so i changed the filename
Merge branch 'code2main' of https://github.com/sharlander/cprog into code2main

* 'code2main' of https://github.com/sharlander/cprog:
  change code.c to main.c

Conflicts:
	makefile
Merge pull request #6 from sharlander/code2main

Code2main