/in/database.c: In function 'main':
/in/database.c:510:9: warning: implicit declaration of function 'gets'; did you mean 'fgets'? [-Wimplicit-function-declaration]
         gets(strin);
         ^~~~
         fgets
In file included from /usr/include/stdio.h:862:0,
                 from /in/database.c:1:
In function 'fgets',
    inlined from 'AUTO' at /in/database.c:474:13:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:260:9: warning: call to '__fgets_chk_warn' declared with attribute warning: fgets called with bigger size than length of destination buffer
  return __fgets_chk_warn (__s, __bos (__s), __n, __stream);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/ccnoKk3F.o: In function `main':
database.c:(.text.startup+0x779): warning: the `gets' function is dangerous and should not be used.