foo.c: In function 'main':
foo.c:6:9: warning: implicit declaration of function 'gets_s'; did you mean 'gets'? [-Wimplicit-function-declaration]
    6 |         gets_s(a);
      |         ^~~~~~
      |         gets
/nix/store/1fn92b0783crypjcxvdv6ycmvi27by0j-binutils-2.40/bin/ld: /tmp/ccqT8zgp.o: in function `main':
foo.c:(.text.startup+0xe): undefined reference to `gets_s'
collect2: error: ld returned 1 exit status

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