foo.c: In function 'main':
foo.c:8:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    8 |     gets(a);
      |     ^~~~
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:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    9 |     gets(b);
      |     ^~~~
/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:17:18: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int' [-Wformat=]
   17 |         printf("%s",a[j]);
      |                 ~^  ~~~~
      |                  |   |
      |                  |   int
      |                  char *
      |                 %d
/nix/store/74y3751gsixaz9797ib0hp7c658sp1y5-binutils-2.40/bin/ld: /tmp/cc7Zho4D.o: in function `main':
foo.c:(.text.startup+0x62): warning: the `gets' function is dangerous and should not be used.

[Hydro](https://hydro.ac)提供评测服务