foo.c: In function 'main':
foo.c:6:9: warning: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    6 |         scanf_s("%d%d", &a, &b);
      |         ^~~~~~~
      |         scanf
foo.c:7:25: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
    7 |         if (1 <= a && a <= 10 ^ 100 && 1 <= b && b <= 10 ^ 100)
      |                       ~~^~~~~
foo.c:7:52: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
    7 |         if (1 <= a && a <= 10 ^ 100 && 1 <= b && b <= 10 ^ 100)
      |                                                  ~~^~~~~
/nix/store/j2gmfdd29cp3rcvghmn1a5kgcnmf8myp-binutils-2.40/bin/ld: /tmp/cc7B75uK.o: in function `main':
foo.c:(.text.startup+0x32): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status

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