foo.c: In function 'main':
foo.c:5:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    5 |         char s[100001];gets(s);
      |         ^~~~
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:6:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    6 |         char name[1000];gets(name);
      |         ^~~~
/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 |         char ming[1000];gets(ming);
      |         ^~~~
/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:12:21: warning: variable 'flag' set but not used [-Wunused-but-set-variable]
   12 |                 int flag=1;
      |                     ^~~~
foo.c:8:13: warning: unused variable 'namelen' [-Wunused-variable]
    8 |         int namelen=strlen(name);
      |             ^~~~~~~
/nix/store/3r87a2wq1w4l66wnsm7rqvy608mx23h6-binutils-2.40/bin/ld: /tmp/ccDhqzCD.o: in function `main':
foo.c:(.text.startup+0x12): warning: the `gets' function is dangerous and should not be used.

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