/in/foo.c: In function 'main':
/in/foo.c:19:9: warning: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
   19 |         scanf_s("%d %d", &n, &m);
      |         ^~~~~~~
      |         scanf
/usr/bin/ld: /tmp/ccFB64og.o: in function `main':
foo.c:(.text.startup+0x28): undefined reference to `scanf_s'
/usr/bin/ld: foo.c:(.text.startup+0x4c): undefined reference to `scanf_s'
/usr/bin/ld: foo.c:(.text.startup+0x8a): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status