foo.c: In function 'main':
foo.c:6:5: warning: implicit declaration of function 'gets_s'; did you mean 'gets'? [-Wimplicit-function-declaration]
    6 |     gets_s(s);
      |     ^~~~~~
      |     gets
foo.c:5:9: warning: unused variable 'n' [-Wunused-variable]
    5 |     int n = 0;
      |         ^
/nix/store/74y3751gsixaz9797ib0hp7c658sp1y5-binutils-2.40/bin/ld: /tmp/ccqjWHw1.o: in function `main':
foo.c:(.text.startup+0x11): undefined reference to `gets_s'
/nix/store/74y3751gsixaz9797ib0hp7c658sp1y5-binutils-2.40/bin/ld: foo.c:(.text.startup+0x1d): undefined reference to `gets_s'
collect2: error: ld returned 1 exit status

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