/in/foo.cc: In function 'int main()':
/in/foo.cc:8:2: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
  gets(tmp);
  ^~~~
In file included from /usr/include/c++/6/cstdio:42:0,
                 from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:46,
                 from /in/foo.cc:1:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/in/foo.cc:8:10: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
  gets(tmp);
          ^
In file included from /usr/include/c++/6/cstdio:42:0,
                 from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:46,
                 from /in/foo.cc:1:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/in/foo.cc:11:7: warning: unused variable 'tag' [-Wunused-variable]
  bool tag=0; 
       ^~~
/in/foo.cc:35:23: warning: 'point' may be used uninitialized in this function [-Wmaybe-uninitialized]
  for(int x1=p;x1>point+1;x1--)
                  ~~~~~^~
/tmp/ccAFUF2G.o: In function `main':
foo.cc:(.text.startup+0x33): warning: the `gets' function is dangerous and should not be used.