foo.c: In function 'main':
foo.c:27:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
   27 |         gets(s);
      |         ^~~~
In file included from foo.c:1:
/nix/store/y8wfrgk7br5rfz4221lfb9v8w3n0cnyd-glibc-2.37-8-dev/include/stdio.h:605:14: note: declared here
  605 | extern char *gets (char *__s) __wur __attribute_deprecated__;
      |              ^~~~
foo.c:35:31: warning: implicit declaration of function 'abs' [-Wimplicit-function-declaration]
   35 |                         int x=abs(i+'a'-s[j]),y=abs(i+'a'-s[j]-26),z=abs(i+'a'-s[j]+26);
      |                               ^~~
foo.c:4:1: note: include '<stdlib.h>' or provide a declaration of 'abs'
    3 | #include<math.h>
  +++ |+#include <stdlib.h>
    4 | //#include<stdlib.h>
foo.c:40:24: warning: variable 'imin' set but not used [-Wunused-but-set-variable]
   40 |         int min=num[0],imin=0;
      |                        ^~~~
/nix/store/74y3751gsixaz9797ib0hp7c658sp1y5-binutils-2.40/bin/ld: /tmp/ccWN4Y6O.o: in function `main':
foo.c:(.text.startup+0xe): warning: the `gets' function is dangerous and should not be used.

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