foo.c:3:5: warning: second argument of 'main' should be 'char **' [-Wmain]
    3 | int main(int argc,char argv[])
      |     ^~~~
foo.c: In function 'main':
foo.c:9:17: warning: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    9 |                 scanf_s("%d", &a[i]);
      |                 ^~~~~~~
      |                 scanf
/nix/store/1fn92b0783crypjcxvdv6ycmvi27by0j-binutils-2.40/bin/ld: /tmp/ccivFnvX.o: in function `main':
foo.c:(.text.startup+0x46): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status

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