/in/foo.c: In function 'en':
/in/foo.c:14:6: error: stray '\' in program
   c=c\n;
      ^
/in/foo.c:14:7: error: expected ';' before 'n'
   c=c\n;
       ^
/in/foo.c: At top level:
/in/foo.c:34:6: warning: return type of 'main' is not 'int' [-Wmain]
 void main()
      ^~~~