foo.c: In function 'main':
foo.c:13:17: warning: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
   13 |                 scanf_s("%d %d\n", &x, & y);
      |                 ^~~~~~~
      |                 scanf
foo.c:14:22: warning: implicit declaration of function 'abs' [-Wimplicit-function-declaration]
   14 |                 sum =abs(x-2) +abs(y-2) + sum;
      |                      ^~~
foo.c:3:1: note: include '<stdlib.h>' or provide a declaration of 'abs'
    2 | #include<math.h>
  +++ |+#include <stdlib.h>
    3 | 
/nix/store/jfkmqz20q8fsaqizcml86adxqyzlwllx-binutils-2.38/bin/ld: /tmp/cc16K6ez.o: in function `main':
foo.c:(.text.startup+0x3a): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status

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