foo.c: In function 'main':
foo.c:7:17: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
    7 |         scanf("%s", &s1);
      |                ~^   ~~~
      |                 |   |
      |                 |   char (*)[1000]
      |                 char *
foo.c:8:17: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
    8 |         scanf("%s", &s2);
      |                ~^   ~~~
      |                 |   |
      |                 |   char (*)[1000]
      |                 char *
foo.c:9:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    9 |         gets(s1);
      |         ^~~~
In file included from foo.c:2:
/nix/store/rffag931pvbdiabwwa539wnwg1piqpx0-glibc-2.35-163-dev/include/stdio.h:605:14: note: declared here
  605 | extern char *gets (char *__s) __wur __attribute_deprecated__;
      |              ^~~~
foo.c:10:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
   10 |         gets(s2);
      |         ^~~~
In file included from foo.c:2:
/nix/store/rffag931pvbdiabwwa539wnwg1piqpx0-glibc-2.35-163-dev/include/stdio.h:605:14: note: declared here
  605 | extern char *gets (char *__s) __wur __attribute_deprecated__;
      |              ^~~~
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 %d",strlen(s1), strlen(s2));
      |                 ~^     ~~~~~~~~~~
      |                  |     |
      |                  int   size_t {aka long unsigned int}
      |                 %ld
foo.c:11:21: warning: format '%d' expects argument of type 'int', but argument 3 has type 'size_t' {aka 'long unsigned int'} [-Wformat=]
   11 |         printf("%d %d",strlen(s1), strlen(s2));
      |                    ~^              ~~~~~~~~~~
      |                     |              |
      |                     int            size_t {aka long unsigned int}
      |                    %ld
/nix/store/jfkmqz20q8fsaqizcml86adxqyzlwllx-binutils-2.38/bin/ld: /tmp/cc7CNM6T.o: in function `main':
foo.c:(.text.startup+0x30): warning: the `gets' function is dangerous and should not be used.

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