foo.c: In function 'main':
foo.c:8:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    8 |         gets (s1);
      |         ^~~~
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:9:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    9 |         gets (s2);
      |         ^~~~
/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:10:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'size_t' {aka 'long unsigned int'} [-Wformat=]
   10 |         printf("%d ",strlen(s1) );
      |                 ~^   ~~~~~~~~~~
      |                  |   |
      |                  int size_t {aka long unsigned int}
      |                 %ld
foo.c:11:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'size_t' {aka 'long unsigned int'} [-Wformat=]
   11 |         printf("%d",strlen(s2) );
      |                 ~^  ~~~~~~~~~~
      |                  |  |
      |                  |  size_t {aka long unsigned int}
      |                  int
      |                 %ld
/nix/store/74y3751gsixaz9797ib0hp7c658sp1y5-binutils-2.40/bin/ld: /tmp/cc3X2HvN.o: in function `main':
foo.c:(.text.startup+0xb): warning: the `gets' function is dangerous and should not be used.

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