/in/foo.c:3:17: warning: return type defaults to 'int' [-Wimplicit-int]
 #define _______ main  
                 ^
/in/foo.c:5:16: note: in expansion of macro '_______'
 #define ______ _______(){  
                ^~~~~~~
/in/foo.c:6:12: note: in expansion of macro '______'
 #define __ ______ _(0x48)_(0x65)_(0x6C)_(0x6C)  
            ^~~~~~
/in/foo.c:9:15: note: in expansion of macro '__'
 #define _____ __ ___ ____ _________  
               ^~
/in/foo.c:11:1: note: in expansion of macro '_____'
 _____
 ^~~~~