/in/foo.cc: In function 'void Print()':
/in/foo.cc:168:28: error: invalid conversion from 'char' to 'const char*' [-fpermissive]
         if(*p!='\n')printf(*p);
                            ^~
In file included from /usr/include/c++/6/cstdio:42:0,
                 from /in/foo.cc:1:
/usr/include/stdio.h:364:12: note:   initializing argument 1 of 'int printf(const char*, ...)'
 extern int printf (const char *__restrict __format, ...);
            ^~~~~~