/in/foo.cc: In function 'int main()':
/in/foo.cc:7:5: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
    7 | gets(num);
      | ~~~~^~~~~
In file included from /in/foo.cc:1:
/usr/include/stdio.h:605:14: note: declared here
  605 | extern char *gets (char *__s) __wur __attribute_deprecated__;
      |              ^~~~
/in/foo.cc:9:5: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
    9 | gets(n);
      | ~~~~^~~
/usr/include/stdio.h:605:14: note: declared here
  605 | extern char *gets (char *__s) __wur __attribute_deprecated__;
      |              ^~~~
/usr/bin/ld: /tmp/ccIho8MQ.o: in function `main':
foo.cc:(.text.startup+0x11): warning: the `gets' function is dangerous and should not be used.