foo.c: In function 'main':
foo.c:7:5: warning: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    7 |     scanf_s("%d%c%d", &num1, &c, &num2);
      |     ^~~~~~~
      |     scanf
foo.c:17:5: warning: 'result' may be used uninitialized [-Wmaybe-uninitialized]
   17 |     printf("%d", result);
      |     ^~~~~~~~~~~~~~~~~~~~
foo.c:9:9: note: 'result' was declared here
    9 |     int result;
      |         ^~~~~~
/nix/store/j2gmfdd29cp3rcvghmn1a5kgcnmf8myp-binutils-2.40/bin/ld: /tmp/ccPIOI6h.o: in function `main':
foo.c:(.text.startup+0x1c): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status

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