foo.c: In function 'main':
foo.c:6:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    6 |         gets(s1);
      |         ^~~~
In file included from foo.c:1:
/nix/store/linb70pgp53f0kygxm5wk163dx22d681-glibc-2.37-45-dev/include/stdio.h:605:14: note: declared here
  605 | extern char *gets (char *__s) __wur __attribute_deprecated__;
      |              ^~~~
foo.c:7:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    7 |         gets(s2);
      |         ^~~~
/nix/store/linb70pgp53f0kygxm5wk163dx22d681-glibc-2.37-45-dev/include/stdio.h:605:14: note: declared here
  605 | extern char *gets (char *__s) __wur __attribute_deprecated__;
      |              ^~~~
foo.c:8:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'size_t' {aka 'long unsigned int'} [-Wformat=]
    8 |         printf("%d %d",strlen(s1),strlen(s2));
      |                 ~^     ~~~~~~~~~~
      |                  |     |
      |                  int   size_t {aka long unsigned int}
      |                 %ld
foo.c:8:21: warning: format '%d' expects argument of type 'int', but argument 3 has type 'size_t' {aka 'long unsigned int'} [-Wformat=]
    8 |         printf("%d %d",strlen(s1),strlen(s2));
      |                    ~^             ~~~~~~~~~~
      |                     |             |
      |                     int           size_t {aka long unsigned int}
      |                    %ld
/nix/store/3r87a2wq1w4l66wnsm7rqvy608mx23h6-binutils-2.40/bin/ld: /tmp/cc39wI3B.o: in function `main':
foo.c:(.text.startup+0xc): warning: the `gets' function is dangerous and should not be used.

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