/in/foo.cc: In function 'int main()':
/in/foo.cc:6:14: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
    6 |  while(gets(p),strcmp(p,"END")!=0)
      |              ^
In file included from /usr/include/stdio.h:867,
                 from /in/foo.cc:1:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:235:1: note: declared here
  235 | gets (char *__str)
      | ^~~~
/in/foo.cc:6:14: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
    6 |  while(gets(p),strcmp(p,"END")!=0)
      |              ^
In file included from /usr/include/stdio.h:867,
                 from /in/foo.cc:1:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:235:1: note: declared here
  235 | gets (char *__str)
      | ^~~~
/in/foo.cc:6:12: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result [-Wunused-result]
    6 |  while(gets(p),strcmp(p,"END")!=0)
      |        ~~~~^~~
/usr/bin/ld: /tmp/ccE8cbph.o: in function `main':
foo.cc:(.text.startup+0x51): warning: the `gets' function is dangerous and should not be used.