foo.c: In function ‘main’:
foo.c:21:5: warning: implicit declaration of function ‘scanf_s’; did you mean ‘scanf’? [-Wimplicit-function-declaration]
   21 |     scanf_s("%d", &n);
      |     ^~~~~~~
      |     scanf
/nix/binutils-2.42/bin/ld: /tmp/ccXX1GBs.o: in function `main':
foo.c:(.text.startup+0x13): undefined reference to `scanf_s'
/nix/binutils-2.42/bin/ld: foo.c:(.text.startup+0x3e): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status

正在同步测试数据，请稍后